v0.5.3

* ci: run ci examples on leptos change

* chore(ci): simulate leptos source change

* ci(todo_app_sqlite_csr): increase retries

* ci: delete check examples workflow

* ci: rename ci examples workflow

* ci: run ci examples with stable toolchain

* chore(ci): remove simulated change

* ci: delete check stable workflow

.github/ISSUE_TEMPLATE/bug_report.md

@@ -16,10 +16,10 @@ Please copy and paste the Leptos dependencies and features from your `Cargo.toml
 
 For example:
 ```toml
-leptos = { version = "0.3", default-features = false, features = ["serde"] }
+leptos = { version = "0.3", features = ["serde"] }
 leptos_axum = { version = "0.3", optional = true }
-leptos_meta = { version = "0.3", default-features = false }
-leptos_router = { version = "0.3", default-features = false }
+leptos_meta = { version = "0.3"}
+leptos_router = { version = "0.3"}
 ```
 
 **To Reproduce**

.github/workflows/check-examples.yml

@@ -1,46 +0,0 @@
-name: Check examples
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-    branches: [main]
-
-env:
-  CARGO_TERM_COLOR: always
-  CARGO_REGISTRIES_CRATES_IO_PROTOCOL: sparse
-
-jobs:
-  test:
-    name: Check examples ${{ matrix.os }} (using rustc ${{ matrix.rust }})
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        rust:
-          - nightly
-        os:
-          - ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Setup Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: ${{ matrix.rust }}
-          override: true
-          components: rustfmt
-
-      - name: Add wasm32-unknown-unknown
-        run: rustup target add wasm32-unknown-unknown
-
-      - name: Setup cargo-make
-        uses: davidB/rust-cargo-make@v1
-
-      - name: Cargo generate-lockfile
-        run: cargo generate-lockfile
-
-      - uses: Swatinem/rust-cache@v2
-
-      - name: Run cargo check on all examples
-        run: cargo make check-examples

.github/workflows/check-stable.yml

@@ -1,46 +0,0 @@
-name: Check stable
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-    branches: [main]
-
-env:
-  CARGO_TERM_COLOR: always
-  CARGO_REGISTRIES_CRATES_IO_PROTOCOL: sparse
-
-jobs:
-  test:
-    name: Check examples ${{ matrix.os }} (using rustc ${{ matrix.rust }})
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        rust:
-          - stable
-        os:
-          - ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Setup Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: ${{ matrix.rust }}
-          override: true
-          components: rustfmt
-
-      - name: Add wasm32-unknown-unknown
-        run: rustup target add wasm32-unknown-unknown
-
-      - name: Setup cargo-make
-        uses: davidB/rust-cargo-make@v1
-
-      - name: Cargo generate-lockfile
-        run: cargo generate-lockfile
-
-      - uses: Swatinem/rust-cache@v2
-
-      - name: Run cargo check on all examples
-        run: cargo make --profile=github-actions check-stable

.github/workflows/check.yml

@@ -1,46 +0,0 @@
-name: Check
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-    branches: [main]
-
-env:
-  CARGO_TERM_COLOR: always
-  CARGO_REGISTRIES_CRATES_IO_PROTOCOL: sparse
-
-jobs:
-  test:
-    name: Run `cargo check` ${{ matrix.os }} (using rustc ${{ matrix.rust }})
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        rust:
-          - nightly
-        os:
-          - ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Setup Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: ${{ matrix.rust }}
-          override: true
-          components: rustfmt
-
-      - name: Add wasm32-unknown-unknown
-        run: rustup target add wasm32-unknown-unknown
-
-      - name: Setup cargo-make
-        uses: davidB/rust-cargo-make@v1
-
-      - name: Cargo generate-lockfile
-        run: cargo generate-lockfile
-
-      - uses: Swatinem/rust-cache@v2
-
-      - name: Run cargo check on all libraries
-        run: cargo make --profile=github-actions check

.github/workflows/ci-changed-examples.yml

@@ -0,0 +1,32 @@
+name: CI Changed Examples
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  get-example-changed:
+    uses: ./.github/workflows/get-example-changed.yml
+
+  get-matrix:
+    needs: [get-example-changed]
+    uses: ./.github/workflows/get-changed-examples-matrix.yml
+    with:
+      example_changed: ${{ fromJSON(needs.get-example-changed.outputs.example_changed) }}
+
+  test:
+    name: CI
+    needs: [get-example-changed, get-matrix]
+    if: needs.get-example-changed.outputs.example_changed == 'true'
+    strategy:
+      matrix: ${{ fromJSON(needs.get-matrix.outputs.matrix) }}
+      fail-fast: false
+    uses: ./.github/workflows/run-cargo-make-task.yml
+    with:
+      directory: ${{ matrix.directory }}
+      cargo_make_task: "ci"
+      toolchain: nightly

.github/workflows/ci-examples.yml

@@ -0,0 +1,27 @@
+name: CI Examples
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  get-leptos-changed:
+    uses: ./.github/workflows/get-leptos-changed.yml
+  get-examples-matrix:
+    uses: ./.github/workflows/get-examples-matrix.yml
+  test:
+    name: CI
+    needs: [get-leptos-changed, get-examples-matrix]
+    if: needs.get-leptos-changed.outputs.leptos_changed == 'true'
+    strategy:
+      matrix: ${{ fromJSON(needs.get-examples-matrix.outputs.matrix) }}
+      fail-fast: false
+    uses: ./.github/workflows/run-cargo-make-task.yml
+    with:
+      directory: ${{ matrix.directory }}
+      cargo_make_task: "ci"
+      toolchain: nightly

.github/workflows/ci-stable-examples.yml

@@ -0,0 +1,26 @@
+name: CI Stable Examples
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  get-leptos-changed:
+    uses: ./.github/workflows/get-leptos-changed.yml
+
+  test:
+    name: CI
+    needs: [get-leptos-changed]
+    if: needs.get-leptos-changed.outputs.leptos_changed == 'true'
+    strategy:
+      matrix:
+        directory: [examples/counters_stable, examples/counter_without_macros]
+    uses: ./.github/workflows/run-cargo-make-task.yml
+    with:
+      directory: ${{ matrix.directory }}
+      cargo_make_task: "ci"
+      toolchain: stable

.github/workflows/ci.yml

@@ -0,0 +1,44 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  get-leptos-changed:
+    uses: ./.github/workflows/get-leptos-changed.yml
+
+  test:
+    name: CI
+    needs: [get-leptos-changed]
+    if: needs.get-leptos-changed.outputs.leptos_changed == 'true'
+    strategy:
+      matrix:
+        directory:
+          [
+            integrations/actix,
+            integrations/axum,
+            integrations/viz,
+            integrations/utils,
+            leptos,
+            leptos_config,
+            leptos_dom,
+            leptos_hot_reload,
+            leptos_macro,
+            leptos_reactive,
+            leptos_server,
+            meta,
+            router,
+            server_fn,
+            server_fn/server_fn_macro_default,
+            server_fn_macro,
+          ]
+    uses: ./.github/workflows/run-cargo-make-task.yml
+    with:
+      directory: ${{ matrix.directory }}
+      cargo_make_task: "ci"
+      toolchain: nightly

.github/workflows/fmt.yml

@@ -1,34 +0,0 @@
-name: Format
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-    branches: [main]
-
-env:
-  CARGO_TERM_COLOR: always
-
-jobs:
-  test:
-    name: Run rustfmt
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        rust:
-          - nightly
-        os:
-          - ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Setup Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: ${{ matrix.rust }}
-          override: true
-          components: rustfmt
-
-      - name: Run Rustfmt
-        run: cargo fmt -- --check

.github/workflows/get-changed-examples-matrix.yml

@@ -0,0 +1,55 @@
+name: Changed Examples Matrix Call
+
+on:
+  workflow_call:
+    inputs:
+      example_changed:
+        description: "Example Changed"
+        required: true
+        type: boolean
+    outputs:
+      matrix:
+        description: "Matrix"
+        value: ${{ jobs.get-example-changed.outputs.matrix }}
+
+jobs:
+  get-example-changed:
+    name: Get Changed Example Matrix
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.set-matrix.outputs.matrix }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Get example project directories that changed
+        id: changed-dirs
+        uses: tj-actions/changed-files@v39
+        with:
+          dir_names: true
+          dir_names_max_depth: "2"
+          files: |
+            examples
+            !examples/cargo-make
+            !examples/gtk
+            !examples/hackernews_js_fetch
+            !examples/Makefile.toml
+            !examples/*.md
+          json: true
+          quotepath: false
+
+      - name: List example project directories that changed
+        run: echo '${{ steps.changed-dirs.outputs.all_changed_files }}'
+
+      - name: Set Matrix
+        id: set-matrix
+        run: |
+          if [ ${{ inputs.example_changed }} == 'true' ]; then
+            # Create matrix with changed directories
+            echo "matrix={\"directory\":${{ steps.changed-dirs.outputs.all_changed_files }}}" >> "$GITHUB_OUTPUT"
+          else
+            # Create matrix with one item to prevent an empty vector error
+            echo "matrix={\"directory\":[\"NO_CHANGE\"]}" >> "$GITHUB_OUTPUT"
+          fi

.github/workflows/get-example-changed.yml

@@ -0,0 +1,39 @@
+name: Examples Changed Call
+
+on:
+  workflow_call:
+    outputs:
+      example_changed:
+        description: "Example Changed"
+        value: ${{ jobs.get-example-changed.outputs.example_changed }}
+
+jobs:
+  get-example-changed:
+    name: Get Example Changed
+    runs-on: ubuntu-latest
+    outputs:
+      example_changed: ${{ steps.set-example-changed.outputs.example_changed }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Get example files that changed
+        id: changed-files
+        uses: tj-actions/changed-files@v39
+        with:
+          files: |
+            examples
+            !examples/cargo-make
+            !examples/gtk
+            !examples/Makefile.toml
+            !examples/*.md
+
+      - name: List example files that changed
+        run: echo '${{ steps.changed-files.outputs.all_changed_files }}'
+
+      - name: Set example_changed
+        id: set-example-changed
+        run: |
+          echo "example_changed=${{ steps.changed-files.outputs.any_changed }}" >> "$GITHUB_OUTPUT"

.github/workflows/get-examples-matrix.yml

@@ -0,0 +1,40 @@
+name: Get Examples Matrix Call
+
+on:
+  workflow_call:
+    outputs:
+      matrix:
+        description: "Matrix"
+        value: ${{ jobs.create.outputs.matrix }}
+
+jobs:
+  create:
+    name: Create Examples Matrix
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.set-matrix.outputs.matrix }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install JQ Tool
+        uses: mbround18/install-jq@v1
+
+      - name: Set Matrix
+        id: set-matrix
+        run: |
+          examples=$(ls examples |
+          awk '{print "examples/" $0}' |
+          grep -v .md |
+          grep -v examples/Makefile.toml |
+          grep -v examples/cargo-make |
+          grep -v examples/gtk |
+          jq -R -s -c 'split("\n")[:-1]')
+          echo "Example Directories: $examples"
+          echo "matrix={\"directory\":$examples}" >> "$GITHUB_OUTPUT"
+
+      - name: Print Location Info
+        run: |
+          echo "Workspace: ${{ github.workspace }}"
+          pwd
+          ls | sort -u

.github/workflows/get-leptos-changed.yml

@@ -0,0 +1,44 @@
+name: Get Leptos Changed Call
+
+on:
+  workflow_call:
+    outputs:
+      leptos_changed:
+        description: "Leptos Changed"
+        value: ${{ jobs.create.outputs.leptos_changed }}
+
+jobs:
+  create:
+    name: Detect Source Change
+    runs-on: ubuntu-latest
+    outputs:
+      leptos_changed: ${{ steps.set-source-changed.outputs.leptos_changed }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Get source files that changed
+        id: changed-source
+        uses: tj-actions/changed-files@v39
+        with:
+          files: |
+            integrations
+            leptos
+            leptos_config
+            leptos_dom
+            leptos_hot_reload
+            leptos_macro
+            leptos_reactive
+            leptos_server
+            meta
+            router
+            server_fn
+            server_fn_macro
+
+      - name: List source files that changed
+        run: echo '${{ steps.changed-source.outputs.all_changed_files }}'
+
+      - name: Set leptos_changed
+        id: set-source-changed
+        run: |
+          echo "leptos_changed=${{ steps.changed-source.outputs.any_changed }}" >> "$GITHUB_OUTPUT"

.github/workflows/publish-book.yml

@@ -1,7 +1,7 @@
 name: Deploy book
 on:
   push:
-    paths: ['docs/book/**']
+    paths: ["docs/book/**"]
     branches:
       - main
 
@@ -9,29 +9,29 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     permissions:
-      contents: write  # To push a branch 
-      pull-requests: write  # To create a PR from that branch
+      contents: write # To push a branch
+      pull-requests: write # To create a PR from that branch
     steps:
-    - uses: actions/checkout@v3
-      with:
-        fetch-depth: 0
-    - name: Install mdbook
-      run: |
-        mkdir mdbook
-        curl -sSL https://github.com/rust-lang/mdBook/releases/download/v0.4.27/mdbook-v0.4.27-x86_64-unknown-linux-gnu.tar.gz | tar -xz --directory=./mdbook
-        echo `pwd`/mdbook >> $GITHUB_PATH
-    - name: Deploy GitHub Pages
-      run: |
-        cd docs/book
-        mdbook build
-        git worktree add gh-pages
-        git config user.name "Deploy book from CI"
-        git config user.email ""
-        cd gh-pages
-        # Delete the ref to avoid keeping history.
-        git update-ref -d refs/heads/gh-pages
-        rm -rf *
-        mv ../book/* .
-        git add .
-        git commit -m "Deploy book $GITHUB_SHA to gh-pages"
-        git push --force --set-upstream origin gh-pages
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Install mdbook
+        run: |
+          mkdir mdbook
+          curl -sSL https://github.com/rust-lang/mdBook/releases/download/v0.4.27/mdbook-v0.4.27-x86_64-unknown-linux-gnu.tar.gz | tar -xz --directory=./mdbook
+          echo `pwd`/mdbook >> $GITHUB_PATH
+      - name: Deploy GitHub Pages
+        run: |
+          cd docs/book
+          mdbook build
+          git worktree add gh-pages
+          git config user.name "Deploy book from CI"
+          git config user.email ""
+          cd gh-pages
+          # Delete the ref to avoid keeping history.
+          git update-ref -d refs/heads/gh-pages
+          rm -rf *
+          mv ../book/* .
+          git add .
+          git commit -m "Deploy book $GITHUB_SHA to gh-pages"
+          git push --force --set-upstream origin gh-pages

.github/workflows/run-cargo-make-task.yml

@@ -0,0 +1,114 @@
+name: Run Task
+
+on:
+  workflow_call:
+    inputs:
+      directory:
+        required: true
+        type: string
+      cargo_make_task:
+        required: true
+        type: string
+      toolchain:
+        required: true
+        type: string
+
+env:
+  CARGO_TERM_COLOR: always
+  CARGO_REGISTRIES_CRATES_IO_PROTOCOL: sparse
+
+jobs:
+  test:
+    name: Run ${{ inputs.cargo_make_task }} (${{ inputs.toolchain }})
+    runs-on: ubuntu-latest
+
+    steps:
+      # Setup environment
+      - uses: actions/checkout@v4
+
+      - name: Setup Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: ${{ inputs.toolchain }}
+          override: true
+          components: rustfmt
+
+      - name: Add wasm32-unknown-unknown
+        run: rustup target add wasm32-unknown-unknown
+
+      - name: Setup cargo-make
+        uses: davidB/rust-cargo-make@v1
+
+      - name: Cargo generate-lockfile
+        run: cargo generate-lockfile
+
+      - uses: Swatinem/rust-cache@v2
+
+      - name: Install Trunk
+        uses: jetli/trunk-action@v0.4.0
+        with:
+          version: "latest"
+
+      - name: Print Trunk Version
+        run: trunk --version
+
+      - name: Install Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 18
+
+      - uses: pnpm/action-setup@v2
+        name: Install pnpm
+        id: pnpm-install
+        with:
+          version: 8
+          run_install: false
+
+      - name: Get pnpm store directory
+        id: pnpm-cache
+        run: |
+          echo "STORE_PATH=$(pnpm store path)" >> $GITHUB_OUTPUT
+
+      - uses: actions/cache@v3
+        name: Setup pnpm cache
+        with:
+          path: ${{ steps.pnpm-cache.outputs.STORE_PATH }}
+          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+          restore-keys: |
+            ${{ runner.os }}-pnpm-store-
+
+      - name: Maybe install chromedriver
+        run: |
+          project_makefile=${{inputs.directory}}/Makefile.toml
+          webdriver_count=$(cat $project_makefile | grep "cargo-make/webdriver.toml" | wc -l)
+          if [ $webdriver_count -eq 1 ]; then
+              if ! command -v chromedriver &>/dev/null; then
+                  echo chromedriver required
+                  sudo apt-get update
+                  sudo apt-get install chromium-chromedriver
+              else
+                  echo chromedriver is already installed
+              fi
+          else
+              echo chromedriver is not required
+          fi
+
+      - name: Maybe install playwright browser dependencies
+        run: |
+          for pw_path in $(find ${{inputs.directory}} -name playwright.config.ts)
+          do
+            pw_dir=$(dirname $pw_path)
+            if [ ! -v $pw_dir ]; then
+              echo "Playwright required in $pw_dir"
+              cd $pw_dir
+              pnpm dlx playwright install --with-deps
+            else
+              echo Playwright is not required
+            fi
+          done
+
+      # Run Cargo Make Task
+      - name: ${{ inputs.cargo_make_task }}
+        run: |
+          cd ${{ inputs.directory }}
+          cargo make --profile=github-actions ${{ inputs.cargo_make_task }}

.github/workflows/test.yml

@@ -1,46 +0,0 @@
-name: Test
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-    branches: [main]
-
-env:
-  CARGO_TERM_COLOR: always
-  CARGO_REGISTRIES_CRATES_IO_PROTOCOL: sparse
-
-jobs:
-  test:
-    name: Run tests ${{ matrix.os }} (using rustc ${{ matrix.rust }})
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        rust:
-          - nightly
-        os:
-          - ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Setup Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: ${{ matrix.rust }}
-          override: true
-          components: rustfmt
-
-      - name: Add wasm32-unknown-unknown
-        run: rustup target add wasm32-unknown-unknown
-
-      - name: Setup cargo-make
-        uses: davidB/rust-cargo-make@v1
-
-      - name: Cargo generate-lockfile
-        run: cargo generate-lockfile
-
-      - uses: Swatinem/rust-cache@v2
-
-      - name: Run tests with all features
-        run: cargo make --profile=github-actions test

.github/workflows/verify-examples.yml

@@ -1,79 +0,0 @@
-name: Verify Examples
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-    branches: [main]
-
-env:
-  CARGO_TERM_COLOR: always
-
-jobs:
-  test:
-    name: Verify examples ${{ matrix.os }} (using rustc ${{ matrix.rust }}
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        rust:
-          - nightly
-        os:
-          - ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Setup Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: ${{ matrix.rust }}
-          override: true
-          components: rustfmt
-
-      - name: Add wasm32-unknown-unknown
-        run: rustup target add wasm32-unknown-unknown
-
-      - name: Setup cargo-make
-        uses: davidB/rust-cargo-make@v1
-
-      - name: Cargo generate-lockfile
-        run: cargo generate-lockfile
-
-      - uses: Swatinem/rust-cache@v2
-
-      - name: Install Trunk
-        uses: jetli/trunk-action@v0.4.0
-        with:
-          version: "latest"
-
-      - name: Print Trunk Version
-        run: trunk --version
-
-      - name: Install Node.js
-        uses: actions/setup-node@v3
-        with:
-          node-version: 18
-
-      - uses: pnpm/action-setup@v2
-        name: Install pnpm
-        id: pnpm-install
-        with:
-          version: 8
-          run_install: false
-
-      - name: Get pnpm store directory
-        id: pnpm-cache
-        shell: bash
-        run: |
-          echo "STORE_PATH=$(pnpm store path)" >> $GITHUB_OUTPUT
-
-      - uses: actions/cache@v3
-        name: Setup pnpm cache
-        with:
-          path: ${{ steps.pnpm-cache.outputs.STORE_PATH }}
-          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
-          restore-keys: |
-            ${{ runner.os }}-pnpm-store-
-
-      - name: Run verify-flow on all web examples
-        run: cargo make --profile=github-actions verify-examples

.gitignore

@@ -9,3 +9,5 @@ Cargo.lock
 .idea
 .direnv
 .envrc
+
+.vscode

ARCHITECTURE.md

@@ -220,8 +220,8 @@ for reference: they include large amounts of manual SSR route handling, etc.
 ## `cargo-leptos` helpers
 
 `leptos_config` and `leptos_hot_reload` exist to support two different features
-of `cargo-leptos`, namely its configuration and its view-patching/hot-
-reloading features.
+of `cargo-leptos`, namely its configuration and its view-patching/hot-reloading 
+features.
 
 It’s important to say that the main feature `cargo-leptos` remains its ability
 to conveniently tie together different build tooling, compiling your app to

CODE_OF_CONDUCT.md

@@ -2,7 +2,7 @@
 
 _This Code of Conduct is based on the [Rust Code of Conduct](https://www.rust-lang.org/policies/code-of-conduct)
 and the [Bevy Code of Conduct](https://raw.githubusercontent.com/bevyengine/bevy/main/CODE_OF_CONDUCT.md),
-which are adapted from the [Node.js Policy on Trolling](http://blog.izs.me/post/30036893703/policy-on-trolling) 
+which are adapted from the [Node.js Policy on Trolling](http://blog.izs.me/post/30036893703/policy-on-trolling)
 and the [Contributor Covenant](https://www.contributor-covenant.org)._
 
 ## Our Pledge

CONTRIBUTING.md

@@ -22,7 +22,7 @@ Leptos, as a framework, reflects certain technical values:
 - **Expose primitives rather than imposing patterns.** Provide building blocks
   that users can combine together to build up more complex behavior, rather than
   requiring users follow certain templates, file formats, etc. e.g., components
-  are defined as functions, rather than a bespoke single-file comonent format.
+  are defined as functions, rather than a bespoke single-file component format.
   The reactive system feeds into the rendering system, rather than being defined
   by it.
 - **Bottom-up over top-down.** If you envision a user’s application as a tree
@@ -42,7 +42,7 @@ Leptos, as a framework, reflects certain technical values:
 - **Embrace Rust semantics.** Especially in things like UI templating, use Rust
   semantics or extend them in a predictable way with control-flow components
   rather than overloading the meaning of Rust terms like `if` or `for` in a
-  framework-speciic way.
+  framework-specific way.
 - **Enhance ergonomics without obfuscating what’s happening.** This is by far
   the hardest to achieve. It’s often the case that adding additional layers to
   improve DX (like a custom build tool and starter templates) comes across as
@@ -67,9 +67,28 @@ are a few guidelines that will make it a better experience for everyone:
 - Our CI tests every PR against all the existing examples, sometimes requiring
   compilation for both server and client side, etc. It’s thorough but slow. If
   you want to run CI locally to reduce frustration, you can do that by installing
-  `cargo-make` and using `cargo make check && cargo make test && cargo make 
+  `cargo-make` and using `cargo make check && cargo make test && cargo make
 check-examples`.
 
+## Before Submitting a PR
+
+We have a fairly extensive CI setup that runs both lints (like `rustfmt` and `clippy`) 
+and tests on PRs. You can run most of these locally if you have `cargo-make` installed.
+
+If you added an example, make sure to add it to the list in `examples/Makefile.toml`.
+
+From the root directory of the repo, run 
+- `cargo +nightly fmt`
+- `cargo +nightly make check`
+- `cargo +nightly make test`
+- `cargo +nightly make check-examples`
+- `cargo +nightly make --profile=github-actions ci`
+
+If you modified an example:
+- `cd examples/your_example`
+- `cargo +nightly fmt -- --config-path ../..`
+- `cargo +nightly make --profile=github-actions verify-flow`
+
 ## Architecture
 
 See [ARCHITECTURE.md](./ARCHITECTURE.md).

Cargo.toml

@@ -1,5 +1,5 @@
 [workspace]
-resolver="2"
+resolver = "2"
 members = [
   # core
   "leptos",
@@ -26,22 +26,22 @@ members = [
 exclude = ["benchmarks", "examples"]
 
 [workspace.package]
-version = "0.3.0"
+version = "0.5.3"
 
 [workspace.dependencies]
-leptos = { path = "./leptos", default-features = false, version = "0.3.0" }
-leptos_dom = { path = "./leptos_dom", default-features = false, version = "0.3.0" }
-leptos_hot_reload = { path = "./leptos_hot_reload", version = "0.3.0" }
-leptos_macro = { path = "./leptos_macro", default-features = false, version = "0.3.0" }
-leptos_reactive = { path = "./leptos_reactive", default-features = false, version = "0.3.0" }
-leptos_server = { path = "./leptos_server", default-features = false, version = "0.3.0" }
-server_fn = { path = "./server_fn", default-features = false, version = "0.3.0" }
-server_fn_macro = { path = "./server_fn_macro", default-features = false, version = "0.3.0" }
-server_fn_macro_default = { path = "./server_fn/server_fn_macro_default", default-features = false, version = "0.3.0" }
-leptos_config = { path = "./leptos_config", default-features = false, version = "0.3.0" }
-leptos_router = { path = "./router", version = "0.3.0" }
-leptos_meta = { path = "./meta", default-features = false, version = "0.3.0" }
-leptos_integration_utils = { path = "./integrations/utils", version = "0.3.0" }
+leptos = { path = "./leptos", version = "0.5.3" }
+leptos_dom = { path = "./leptos_dom", version = "0.5.3" }
+leptos_hot_reload = { path = "./leptos_hot_reload", version = "0.5.3" }
+leptos_macro = { path = "./leptos_macro", version = "0.5.3" }
+leptos_reactive = { path = "./leptos_reactive", version = "0.5.3" }
+leptos_server = { path = "./leptos_server", version = "0.5.3" }
+server_fn = { path = "./server_fn", version = "0.5.3" }
+server_fn_macro = { path = "./server_fn_macro", version = "0.5.3" }
+server_fn_macro_default = { path = "./server_fn/server_fn_macro_default", version = "0.5.3" }
+leptos_config = { path = "./leptos_config", version = "0.5.3" }
+leptos_router = { path = "./router", version = "0.5.3" }
+leptos_meta = { path = "./meta", version = "0.5.3" }
+leptos_integration_utils = { path = "./integrations/utils", version = "0.5.3" }
 
 [profile.release]
 codegen-units = 1

Makefile.toml

@@ -3,118 +3,37 @@
 #     cargo install --force cargo-make
 ############
 
-[config]
-# make tasks run at the workspace root
-default_to_workspace = false
-
-[tasks.check]
-clear = true
-dependencies = [
-	"check-all",
-	"check-wasm",
-	"check-all-release",
-	"check-wasm-release",
-]
-
-[tasks.check-all]
-command = "cargo"
-args = ["+nightly", "check-all-features"]
-install_crate = "cargo-all-features"
-
-[tasks.check-wasm]
-clear = true
-dependencies = [{ name = "check-wasm", path = "leptos" }]
-
-[tasks.check-all-release]
-command = "cargo"
-args = ["+nightly", "check-all-features"]
-install_crate = "cargo-all-features"
-
-[tasks.check-wasm-release]
-clear = true
-dependencies = [{ name = "check-wasm-release", path = "leptos" }]
-
-[tasks.check-examples]
-clear = true
-dependencies = [
-	{ name = "check", path = "examples/counter" },
-	{ name = "check", path = "examples/counter_isomorphic" },
-	{ name = "check", path = "examples/counters" },
-	{ name = "check", path = "examples/error_boundary" },
-	{ name = "check", path = "examples/errors_axum" },
-	{ name = "check", path = "examples/fetch" },
-	{ name = "check", path = "examples/hackernews" },
-	{ name = "check", path = "examples/hackernews_axum" },
-	{ name = "check", path = "examples/login_with_token_csr_only" },
-	{ name = "check", path = "examples/parent_child" },
-	{ name = "check", path = "examples/router" },
-	{ name = "check", path = "examples/session_auth_axum" },
-	{ name = "check", path = "examples/slots" },
-	{ name = "check", path = "examples/ssr_modes" },
-	{ name = "check", path = "examples/ssr_modes_axum" },
-	{ name = "check", path = "examples/tailwind" },
-	{ name = "check", path = "examples/tailwind_csr_trunk" },
-	{ name = "check", path = "examples/todo_app_sqlite" },
-	{ name = "check", path = "examples/todo_app_sqlite_axum" },
-	{ name = "check", path = "examples/todo_app_sqlite_viz" },
-	{ name = "check", path = "examples/todomvc" },
-]
+[env]
+CARGO_MAKE_EXTEND_WORKSPACE_MAKEFILE = true
 
 [tasks.check-stable]
+workspace = false
 clear = true
 dependencies = [
 	{ name = "check", path = "examples/counter_without_macros" },
 	{ name = "check", path = "examples/counters_stable" },
 ]
 
-[tasks.test]
-clear = true
-dependencies = [
-	"test-all",
-	"test-leptos_macro-example",
-	"doc-leptos_macro-example",
-]
-
-[tasks.test-all]
-command = "cargo"
-args = ["+nightly", "test-all-features"]
-install_crate = "cargo-all-features"
-
-[tasks.test-leptos_macro-example]
-description = "Tests the leptos_macro/example to check if macro handles doc comments correctly"
-command = "cargo"
-args = ["+nightly", "test", "--doc"]
-cwd = "leptos_macro/example"
-install_crate = false
-
-[tasks.doc-leptos_macro-example]
-description = "Docs the leptos_macro/example to check if macro handles doc comments correctly"
-command = "cargo"
-args = ["+nightly", "doc"]
-cwd = "leptos_macro/example"
-install_crate = false
-
-[tasks.test-examples]
-description = "Run all unit and web tests for examples"
+[tasks.ci-examples]
+workspace = false
 cwd = "examples"
 command = "cargo"
-args = ["make", "test-unit-and-web"]
+args = ["make", "ci-clean"]
 
-[tasks.verify-examples]
-description = "Run all quality checks and tests for examples"
+[tasks.check-examples]
+workspace = false
 cwd = "examples"
 command = "cargo"
-args = ["make", "verify-flow"]
+args = ["make", "check-clean"]
+
+[tasks.build-examples]
+workspace = false
+cwd = "examples"
+command = "cargo"
+args = ["make", "build-clean"]
 
 [tasks.clean-examples]
-description = "Clean all example projects"
+workspace = false
 cwd = "examples"
 command = "cargo"
-args = ["make", "clean-all"]
-
-[env]
-RUSTFLAGS = ""
-LEPTOS_OUTPUT_NAME = "ci" # allows examples to check/build without cargo-leptos
-
-[env.github-actions]
-RUSTFLAGS = "-D warnings"
+args = ["make", "clean"]

README.md

@@ -8,18 +8,19 @@
 [![Discord](https://img.shields.io/discord/1031524867910148188?color=%237289DA&label=discord)](https://discord.gg/YdRAhS7eQB)
 [![Matrix](https://img.shields.io/badge/Matrix-leptos-grey?logo=matrix&labelColor=white&logoColor=black)](https://matrix.to/#/#leptos:matrix.org)
 
-
 [Website](https://leptos.dev) | [Book](https://leptos-rs.github.io/leptos/) | [Docs.rs](https://docs.rs/leptos/latest/leptos/) | [Playground](https://codesandbox.io/p/sandbox/leptos-rtfggt?file=%2Fsrc%2Fmain.rs%3A1%2C1) | [Discord](https://discord.gg/YdRAhS7eQB)
 
+You can find a list of useful libraries and example projects at [`awesome-leptos`](https://github.com/leptos-rs/awesome-leptos).
+
 # Leptos
 
 ```rust
 use leptos::*;
 
 #[component]
-pub fn SimpleCounter(cx: Scope, initial_value: i32) -> impl IntoView {
+pub fn SimpleCounter(initial_value: i32) -> impl IntoView {
     // create a reactive signal with the initial value
-    let (value, set_value) = create_signal(cx, initial_value);
+    let (value, set_value) = create_signal(initial_value);
 
     // create event handlers for our buttons
     // note that `value` and `set_value` are `Copy`, so it's super easy to move them into closures
@@ -28,21 +29,23 @@ pub fn SimpleCounter(cx: Scope, initial_value: i32) -> impl IntoView {
     let increment = move |_| set_value.update(|value| *value += 1);
 
     // create user interfaces with the declarative `view!` macro
-    view! { cx,
+    view! {
         <div>
-            <button on:click=clear>"Clear"</button>
-            <button on:click=decrement>"-1"</button>
+            <button on:click=clear>Clear</button>
+            <button on:click=decrement>-1</button>
+            // text nodes can be quoted or unquoted
             <span>"Value: " {value} "!"</span>
-            <button on:click=increment>"+1"</button>
+            <button on:click=increment>+1</button>
         </div>
     }
 }
 
 // Easy to use with Trunk (trunkrs.dev) or with a simple wasm-bindgen setup
 pub fn main() {
-    mount_to_body(|cx| view! { cx,  <SimpleCounter initial_value=3 /> })
+    mount_to_body(|| view! {
+        <SimpleCounter initial_value=3 />
+    })
 }
-
 ```
 
 ## About the Framework
@@ -69,7 +72,7 @@ Here are some resources for learning more about Leptos:
 
 ## `nightly` Note
 
-Most of the examples assume you’re using `nightly` version of Rust. For this, you can either set your toolchain globally or on per-project basis.
+Most of the examples assume you’re using `nightly` version of Rust and the `nightly` feature of Leptos. To use `nightly` Rust, you can either set your toolchain globally or on per-project basis.
 
 To set `nightly` as a default toolchain for all projects (and add the ability to compile Rust to WebAssembly, if you haven’t already):
 
@@ -87,13 +90,7 @@ channel = "nightly"
 targets = ["wasm32-unknown-unknown"]
 ```
 
-If you’re on `stable`, note the following:
-
-1. You need to enable the `"stable"` flag in `Cargo.toml`: `leptos = { version = "0.2", features = ["stable"] }`
-2. `nightly` enables the function call syntax for accessing and setting signals. If you’re using `stable`,
-   you’ll just call `.get()`, `.set()`, or `.update()` manually. Check out the
-   [`counters_stable` example](https://github.com/leptos-rs/leptos/blob/main/examples/counters_stable/src/main.rs)
-   for examples of the correct API.
+The `nightly` feature enables the function call syntax for accessing and setting signals, as opposed to `.get()` and `.set()`. This leads to a consistent mental model in which accessing a reactive value of any kind (a signal, memo, or derived signal) is always represented as a function call. This is only possible with nightly Rust and the `nightly` feature.
 
 ## `cargo-leptos`
 
@@ -112,7 +109,7 @@ Open browser to [http://localhost:3000/](http://localhost:3000/).
 
 ### What’s up with the name?
 
-_Leptos_ (λεπτός) is an ancient Greek word meaning “thin, light, refine, fine-grained.” To me, a classicist and not a dog owner, it evokes the lightweight reactive system that powers the framework. I've since learned the same word is at the root of the medical term “leptospirosis,” a blood infection that affects humans and animals... My bad. No dogs were harmed in the creation of this framework.
+_Leptos_ (λεπτός) is an ancient Greek word meaning “thin, light, refined, fine-grained.” To me, a classicist and not a dog owner, it evokes the lightweight reactive system that powers the framework. I've since learned the same word is at the root of the medical term “leptospirosis,” a blood infection that affects humans and animals... My bad. No dogs were harmed in the creation of this framework.
 
 ### Is it production ready?
 
@@ -120,7 +117,7 @@ People usually mean one of three things by this question.
 
 1. **Are the APIs stable?** i.e., will I have to rewrite my whole app from Leptos 0.1 to 0.2 to 0.3 to 0.4, or can I write it now and benefit from new features and updates as new versions come?
 
-The APIs are basically settled. We’re adding new features, but we’re very happy with where the type system and patterns have landed. I would not expect major breaking changes to your code to adapt to future releases. The sorts of breaking changes that we discuss are things like “Oh yeah, that function should probably take `cx` as its argument...” not major changes to the way you write your application.
+The APIs are basically settled. We’re adding new features, but we’re very happy with where the type system and patterns have landed. I would not expect major breaking changes to your code to adapt to future releases, in terms of architecture.
 
 2. **Are there bugs?**
 
@@ -159,13 +156,13 @@ There are some practical differences that make a significant difference:
 
 - **Templating:** Leptos uses a JSX-like template format (built on [syn-rsx](https://github.com/stoically/syn-rsx)) for its `view` macro. Sycamore offers the choice of its own templating DSL or a builder syntax.
 - **Server integration:** Leptos provides primitives that encourage HTML streaming and allow for easy async integration and RPC calls, even without WASM enabled, making it easy to opt into integrations between your frontend and backend code without pushing you toward any particular metaframework patterns.
-- **Read-write segregation:** Leptos, like Solid, encourages read-write segregation between signal getters and setters, so you end up accessing signals with tuples like `let (count, set_count) = create_signal(cx, 0);` _(If you prefer or if it's more convenient for your API, you can use [`create_rw_signal`](https://docs.rs/leptos/latest/leptos/fn.create_rw_signal.html) to give a unified read/write signal.)_
+- **Read-write segregation:** Leptos, like Solid, encourages read-write segregation between signal getters and setters, so you end up accessing signals with tuples like `let (count, set_count) = create_signal(0);` _(If you prefer or if it's more convenient for your API, you can use [`create_rw_signal`](https://docs.rs/leptos/latest/leptos/fn.create_rw_signal.html) to give a unified read/write signal.)_
 - **Signals are functions:** In Leptos, you can call a signal to access it rather than calling a specific method (so, `count()` instead of `count.get()`) This creates a more consistent mental model: accessing a reactive value is always a matter of calling a function. For example:
 
   ```rust
-  let (count, set_count) = create_signal(cx, 0); // a signal
+  let (count, set_count) = create_signal(0); // a signal
   let double_count = move || count() * 2; // a derived signal
-  let memoized_count = create_memo(cx, move |_| count() * 3); // a memo
+  let memoized_count = create_memo(move |_| count() * 3); // a memo
   // all are accessed by calling them
   assert_eq!(count(), 0);
   assert_eq!(double_count(), 0);

SECURITY.md

@@ -0,0 +1,13 @@
+# Security Policy
+
+## Reporting a Vulnerability
+
+To report a suspected security issue, please contact security@leptos.dev rather than opening
+a public issue.
+
+## Supported Versions
+
+The most-recently-released version of the library is supported with security updates.
+For example, if a security issue is discovered that affects 0.3.2 and all later releases,
+a 0.4.x patch will be released but a new 0.3.x patch release will not be made. You should 
+plan to update to the latest version to receive any new features or bugfixes of any kind.

benchmarks/Cargo.toml

@@ -4,10 +4,19 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-l021 = { package = "leptos", version = "0.2.1" }
-leptos = { path = "../leptos", default-features = false, features = ["ssr"] }
+l0410 = { package = "leptos", version = "0.4.10", features = [
+	"nightly",
+	"ssr",
+] }
+leptos = { path = "../leptos", features = ["ssr", "nightly"] }
+leptos_reactive = { path = "../leptos_reactive", features = ["ssr", "nightly"] }
+tachydom = { git = "https://github.com/gbj/tachys", features = [
+	"nightly",
+	"leptos",
+] }
+tachy_maccy = { git = "https://github.com/gbj/tachys", features = ["nightly"] }
 sycamore = { version = "0.8", features = ["ssr"] }
-yew = { git = "https://github.com/yewstack/yew", features = ["ssr"] }
+yew = { version = "0.20", features = ["ssr"] }
 tokio-test = "0.4"
 miniserde = "0.1"
 gloo = "0.8"
@@ -20,7 +29,6 @@ strum_macros = "0.24"
 serde = { version = "1", features = ["derive", "rc"] }
 serde_json = "1"
 tera = "1"
-reactive-signals = "0.1.0-alpha.4"
 
 [dependencies.web-sys]
 version = "0.3"

benchmarks/src/lib.rs

@@ -2,6 +2,6 @@
 
 extern crate test;
 
-//åmod reactive;
-//mod ssr;
+mod reactive;
+mod ssr;
 mod todomvc;

benchmarks/src/reactive.rs

@@ -7,19 +7,16 @@ fn leptos_deep_creation(b: &mut Bencher) {
     let runtime = create_runtime();
 
     b.iter(|| {
-        create_scope(runtime, |cx| {
-            let signal = create_rw_signal(cx, 0);
-            let mut memos = Vec::<Memo<usize>>::new();
-            for _ in 0..1000usize {
-                let prev = memos.last().copied();
-                if let Some(prev) = prev {
-                    memos.push(create_memo(cx, move |_| prev.get() + 1));
-                } else {
-                    memos.push(create_memo(cx, move |_| signal.get() + 1));
-                }
+        let signal = create_rw_signal(0);
+        let mut memos = Vec::<Memo<usize>>::new();
+        for _ in 0..1000usize {
+            let prev = memos.last().copied();
+            if let Some(prev) = prev {
+                memos.push(create_memo(move |_| prev.get() + 1));
+            } else {
+                memos.push(create_memo(move |_| signal.get() + 1));
             }
-        })
-        .dispose()
+        }
     });
 
     runtime.dispose();
@@ -31,20 +28,17 @@ fn leptos_deep_update(b: &mut Bencher) {
     let runtime = create_runtime();
 
     b.iter(|| {
-        create_scope(runtime, |cx| {
-            let signal = create_rw_signal(cx, 0);
-            let mut memos = Vec::<Memo<usize>>::new();
-            for _ in 0..1000usize {
-                if let Some(prev) = memos.last().copied() {
-                    memos.push(create_memo(cx, move |_| prev.get() + 1));
-                } else {
-                    memos.push(create_memo(cx, move |_| signal.get() + 1));
-                }
+        let signal = create_rw_signal(0);
+        let mut memos = Vec::<Memo<usize>>::new();
+        for _ in 0..1000usize {
+            if let Some(prev) = memos.last().copied() {
+                memos.push(create_memo(move |_| prev.get() + 1));
+            } else {
+                memos.push(create_memo(move |_| signal.get() + 1));
             }
-            signal.set(1);
-            assert_eq!(memos[999].get(), 1001);
-        })
-        .dispose()
+        }
+        signal.set(1);
+        assert_eq!(memos[999].get(), 1001);
     });
 
     runtime.dispose();
@@ -56,17 +50,12 @@ fn leptos_narrowing_down(b: &mut Bencher) {
     let runtime = create_runtime();
 
     b.iter(|| {
-        create_scope(runtime, |cx| {
-            let sigs =
-                (0..1000).map(|n| create_signal(cx, n)).collect::<Vec<_>>();
-            let reads = sigs.iter().map(|(r, _)| *r).collect::<Vec<_>>();
-            let writes = sigs.iter().map(|(_, w)| *w).collect::<Vec<_>>();
-            let memo = create_memo(cx, move |_| {
-                reads.iter().map(|r| r.get()).sum::<i32>()
-            });
-            assert_eq!(memo(), 499500);
-        })
-        .dispose()
+        let sigs = (0..1000).map(|n| create_signal(n)).collect::<Vec<_>>();
+        let reads = sigs.iter().map(|(r, _)| *r).collect::<Vec<_>>();
+        let writes = sigs.iter().map(|(_, w)| *w).collect::<Vec<_>>();
+        let memo =
+            create_memo(move |_| reads.iter().map(|r| r.get()).sum::<i32>());
+        assert_eq!(memo(), 499500);
     });
 
     runtime.dispose();
@@ -78,16 +67,13 @@ fn leptos_fanning_out(b: &mut Bencher) {
     let runtime = create_runtime();
 
     b.iter(|| {
-        create_scope(runtime, |cx| {
-            let sig = create_rw_signal(cx, 0);
-            let memos = (0..1000)
-                .map(|_| create_memo(cx, move |_| sig.get()))
-                .collect::<Vec<_>>();
-            assert_eq!(memos.iter().map(|m| m.get()).sum::<i32>(), 0);
-            sig.set(1);
-            assert_eq!(memos.iter().map(|m| m.get()).sum::<i32>(), 1000);
-        })
-        .dispose()
+        let sig = create_rw_signal(0);
+        let memos = (0..1000)
+            .map(|_| create_memo(move |_| sig.get()))
+            .collect::<Vec<_>>();
+        assert_eq!(memos.iter().map(|m| m.get()).sum::<i32>(), 0);
+        sig.set(1);
+        assert_eq!(memos.iter().map(|m| m.get()).sum::<i32>(), 1000);
     });
 
     runtime.dispose();
@@ -98,143 +84,36 @@ fn leptos_narrowing_update(b: &mut Bencher) {
     use leptos::*;
     let runtime = create_runtime();
 
-    b.iter(|| {
-        create_scope(runtime, |cx| {
-            let acc = Rc::new(Cell::new(0));
-            let sigs =
-                (0..1000).map(|n| create_signal(cx, n)).collect::<Vec<_>>();
-            let reads = sigs.iter().map(|(r, _)| *r).collect::<Vec<_>>();
-            let writes = sigs.iter().map(|(_, w)| *w).collect::<Vec<_>>();
-            let memo = create_memo(cx, move |_| {
-                reads.iter().map(|r| r.get()).sum::<i32>()
-            });
-            assert_eq!(memo(), 499500);
-            create_isomorphic_effect(cx, {
-                let acc = Rc::clone(&acc);
-                move |_| {
-                    acc.set(memo());
-                }
-            });
-            assert_eq!(acc.get(), 499500);
-
-            writes[1].update(|n| *n += 1);
-            writes[10].update(|n| *n += 1);
-            writes[100].update(|n| *n += 1);
-
-            assert_eq!(acc.get(), 499503);
-            assert_eq!(memo(), 499503);
-        })
-        .dispose()
-    });
-
-    runtime.dispose();
-}
-
-#[bench]
-fn leptos_scope_creation_and_disposal(b: &mut Bencher) {
-    use leptos::*;
-    let runtime = create_runtime();
-
     b.iter(|| {
         let acc = Rc::new(Cell::new(0));
-        let disposers = (0..1000)
-            .map(|_| {
-                create_scope(runtime, {
-                    let acc = Rc::clone(&acc);
-                    move |cx| {
-                        let (r, w) = create_signal(cx, 0);
-                        create_isomorphic_effect(cx, {
-                            move |_| {
-                                acc.set(r());
-                            }
-                        });
-                        w.update(|n| *n += 1);
-                    }
-                })
-            })
-            .collect::<Vec<_>>();
-        for disposer in disposers {
-            disposer.dispose();
-        }
-    });
-
-    runtime.dispose();
-}
-
-#[bench]
-fn rs_deep_update(b: &mut Bencher) {
-    use reactive_signals::{Scope, Signal, signal, runtimes::ClientRuntime, types::Func};
-
-    let sc = ClientRuntime::new_root_scope();
-    b.iter(|| {
-        let signal = signal!(sc, 0);
-        let mut memos = Vec::<Signal<Func<i32>, ClientRuntime>>::new();
-        for i in 0..1000usize {
-            let prev = memos.get(i.saturating_sub(1)).copied();
-            if let Some(prev) = prev {
-                memos.push(signal!(sc, move || prev.get() + 1))
-            } else {
-                memos.push(signal!(sc, move || signal.get() + 1))
-            }
-        }
-        signal.set(1);
-        assert_eq!(memos[999].get(), 1001);
-    });
-}
-
-#[bench]
-fn rs_fanning_out(b: &mut Bencher) {
-    use reactive_signals::{Scope, Signal, signal, runtimes::ClientRuntime, types::Func};
-    let cx = ClientRuntime::new_root_scope();
-
-    b.iter(|| {
-        let sig = signal!(cx, 0);
-        let memos = (0..1000)
-            .map(|_| signal!(cx, move || sig.get()))
-            .collect::<Vec<_>>();
-        assert_eq!(memos.iter().map(|m| m.get()).sum::<i32>(), 0);
-        sig.set(1);
-        assert_eq!(memos.iter().map(|m| m.get()).sum::<i32>(), 1000);
-    });
-}
-
-#[bench]
-fn rs_narrowing_update(b: &mut Bencher) {
-    use reactive_signals::{Scope, Signal, signal, runtimes::ClientRuntime, types::Func};
-    let cx = ClientRuntime::new_root_scope();
-
-    b.iter(|| {
-        let acc = Rc::new(Cell::new(0));
-        let sigs =
-            (0..1000).map(|n| signal!(cx, n)).collect::<Vec<_>>();
-        let memo = signal!(cx, {
-            let sigs = sigs.clone();
-            move || {
-                sigs.iter().map(|r| r.get()).sum::<i32>()
-            }
-        });
-        assert_eq!(memo.get(), 499500);
-        signal!(cx, {
+        let sigs = (0..1000).map(|n| create_signal(n)).collect::<Vec<_>>();
+        let reads = sigs.iter().map(|(r, _)| *r).collect::<Vec<_>>();
+        let writes = sigs.iter().map(|(_, w)| *w).collect::<Vec<_>>();
+        let memo =
+            create_memo(move |_| reads.iter().map(|r| r.get()).sum::<i32>());
+        assert_eq!(memo(), 499500);
+        create_isomorphic_effect({
             let acc = Rc::clone(&acc);
-            move || {
-                acc.set(memo.get());
+            move |_| {
+                acc.set(memo());
             }
         });
-
         assert_eq!(acc.get(), 499500);
 
-        sigs[1].update(|n| *n += 1);
-        sigs[10].update(|n| *n += 1);
-        sigs[100].update(|n| *n += 1);
+        writes[1].update(|n| *n += 1);
+        writes[10].update(|n| *n += 1);
+        writes[100].update(|n| *n += 1);
 
         assert_eq!(acc.get(), 499503);
-        assert_eq!(memo.get(), 499503);
+        assert_eq!(memo(), 499503);
     });
+
+    runtime.dispose();
 }
 
 #[bench]
-fn l021_deep_creation(b: &mut Bencher) {
-    use l021::*;
+fn l0410_deep_creation(b: &mut Bencher) {
+    use l0410::*;
     let runtime = create_runtime();
 
     b.iter(|| {
@@ -256,8 +135,8 @@ fn l021_deep_creation(b: &mut Bencher) {
 }
 
 #[bench]
-fn l021_deep_update(b: &mut Bencher) {
-    use l021::*;
+fn l0410_deep_update(b: &mut Bencher) {
+    use l0410::*;
     let runtime = create_runtime();
 
     b.iter(|| {
@@ -281,8 +160,8 @@ fn l021_deep_update(b: &mut Bencher) {
 }
 
 #[bench]
-fn l021_narrowing_down(b: &mut Bencher) {
-    use l021::*;
+fn l0410_narrowing_down(b: &mut Bencher) {
+    use l0410::*;
     let runtime = create_runtime();
 
     b.iter(|| {
@@ -304,8 +183,8 @@ fn l021_narrowing_down(b: &mut Bencher) {
 }
 
 #[bench]
-fn l021_fanning_out(b: &mut Bencher) {
-    use leptos::*;
+fn l0410_fanning_out(b: &mut Bencher) {
+    use l0410::*;
     let runtime = create_runtime();
 
     b.iter(|| {
@@ -324,8 +203,8 @@ fn l021_fanning_out(b: &mut Bencher) {
     runtime.dispose();
 }
 #[bench]
-fn l021_narrowing_update(b: &mut Bencher) {
-    use l021::*;
+fn l0410_narrowing_update(b: &mut Bencher) {
+    use l0410::*;
     let runtime = create_runtime();
 
     b.iter(|| {
@@ -338,11 +217,11 @@ fn l021_narrowing_update(b: &mut Bencher) {
             let memo = create_memo(cx, move |_| {
                 reads.iter().map(|r| r.get()).sum::<i32>()
             });
-            assert_eq!(memo(), 499500);
+            assert_eq!(memo.get(), 499500);
             create_isomorphic_effect(cx, {
                 let acc = Rc::clone(&acc);
                 move |_| {
-                    acc.set(memo());
+                    acc.set(memo.get());
                 }
             });
             assert_eq!(acc.get(), 499500);
@@ -352,7 +231,7 @@ fn l021_narrowing_update(b: &mut Bencher) {
             writes[100].update(|n| *n += 1);
 
             assert_eq!(acc.get(), 499503);
-            assert_eq!(memo(), 499503);
+            assert_eq!(memo.get(), 499503);
         })
         .dispose()
     });
@@ -361,8 +240,8 @@ fn l021_narrowing_update(b: &mut Bencher) {
 }
 
 #[bench]
-fn l021_scope_creation_and_disposal(b: &mut Bencher) {
-    use l021::*;
+fn l0410_scope_creation_and_disposal(b: &mut Bencher) {
+    use l0410::*;
     let runtime = create_runtime();
 
     b.iter(|| {
@@ -375,7 +254,7 @@ fn l021_scope_creation_and_disposal(b: &mut Bencher) {
                         let (r, w) = create_signal(cx, 0);
                         create_isomorphic_effect(cx, {
                             move |_| {
-                                acc.set(r());
+                                acc.set(r.get());
                             }
                         });
                         w.update(|n| *n += 1);

benchmarks/src/ssr.rs

@@ -2,15 +2,14 @@ use test::Bencher;
 
 #[bench]
 fn leptos_ssr_bench(b: &mut Bencher) {
+	use leptos::*;
+	let r = create_runtime();
     b.iter(|| {
-		use leptos::*;
-		leptos_dom::HydrationCtx::reset_id();
-		_ = create_scope(create_runtime(), |cx| {
+			leptos::leptos_dom::HydrationCtx::reset_id();
 			#[component]
-			fn Counter(cx: Scope, initial: i32) -> impl IntoView {
-				let (value, set_value) = create_signal(cx, initial);
+			fn Counter(initial: i32) -> impl IntoView {
+				let (value, set_value) = create_signal(initial);
 				view! {
-					cx,
 					<div>
 						<button on:click=move |_| set_value.update(|value| *value -= 1)>"-1"</button>
 						<span>"Value: " {move || value().to_string()} "!"</span>
@@ -20,7 +19,6 @@ fn leptos_ssr_bench(b: &mut Bencher) {
 			}
 
 			let rendered = view! { 
-				cx,
 				<main>
 					<h1>"Welcome to our benchmark page."</h1>
 					<p>"Here's some introductory text."</p>
@@ -28,14 +26,53 @@ fn leptos_ssr_bench(b: &mut Bencher) {
 					<Counter initial=2/>
 					<Counter initial=3/>
 				</main>
-			}.into_view(cx).render_to_string(cx);
+			}.into_view().render_to_string();
 
 			assert_eq!(
 				rendered,
-				"<main id=\"_0-1\"><h1 id=\"_0-2\">Welcome to our benchmark page.</h1><p id=\"_0-3\">Here&#x27;s some introductory text.</p><div id=\"_0-3-1\"><button id=\"_0-3-2\">-1</button><span id=\"_0-3-3\">Value: <!>1<!--hk=_0-3-4-->!</span><button id=\"_0-3-5\">+1</button></div><!--hk=_0-3-0--><div id=\"_0-3-5-1\"><button id=\"_0-3-5-2\">-1</button><span id=\"_0-3-5-3\">Value: <!>2<!--hk=_0-3-5-4-->!</span><button id=\"_0-3-5-5\">+1</button></div><!--hk=_0-3-5-0--><div id=\"_0-3-5-5-1\"><button id=\"_0-3-5-5-2\">-1</button><span id=\"_0-3-5-5-3\">Value: <!>3<!--hk=_0-3-5-5-4-->!</span><button id=\"_0-3-5-5-5\">+1</button></div><!--hk=_0-3-5-5-0--></main>"
-			);
-		});
+"<main data-hk=\"0-0-0-1\"><h1 data-hk=\"0-0-0-2\">Welcome to our benchmark page.</h1><p data-hk=\"0-0-0-3\">Here&#x27;s some introductory text.</p><div data-hk=\"0-0-0-5\"><button data-hk=\"0-0-0-6\">-1</button><span data-hk=\"0-0-0-7\">Value: <!>1<!--hk=0-0-0-8-->!</span><button data-hk=\"0-0-0-9\">+1</button></div><!--hk=0-0-0-4--><div data-hk=\"0-0-0-11\"><button data-hk=\"0-0-0-12\">-1</button><span data-hk=\"0-0-0-13\">Value: <!>2<!--hk=0-0-0-14-->!</span><button data-hk=\"0-0-0-15\">+1</button></div><!--hk=0-0-0-10--><div data-hk=\"0-0-0-17\"><button data-hk=\"0-0-0-18\">-1</button><span data-hk=\"0-0-0-19\">Value: <!>3<!--hk=0-0-0-20-->!</span><button data-hk=\"0-0-0-21\">+1</button></div><!--hk=0-0-0-16--></main>"			);
 	});
+	r.dispose();
+}
+
+#[bench]
+fn tachys_ssr_bench(b: &mut Bencher) {
+	use leptos::{create_runtime, create_signal, SignalGet, SignalUpdate};
+	use tachy_maccy::view;
+	use tachydom::view::{Render, RenderHtml};
+	use tachydom::html::element::ElementChild;
+	use tachydom::html::attribute::global::ClassAttribute;
+	use tachydom::html::attribute::global::GlobalAttributes;
+	use tachydom::html::attribute::global::OnAttribute;
+	use tachydom::renderer::dom::Dom;
+	let rt = create_runtime();
+    b.iter(|| {
+		fn counter(initial: i32) -> impl Render<Dom> + RenderHtml<Dom> {
+			let (value, set_value) = create_signal(initial);
+			view! {
+				<div>
+					<button on:click=move |_| set_value.update(|value| *value -= 1)>"-1"</button>
+					<span>"Value: " {move || value().to_string()} "!"</span>
+					<button on:click=move |_| set_value.update(|value| *value += 1)>"+1"</button>
+				</div>
+			}
+		}
+
+		let rendered = view! { 
+			<main>
+				<h1>"Welcome to our benchmark page."</h1>
+				<p>"Here's some introductory text."</p>
+				{counter(1)}
+				{counter(2)}
+				{counter(3)}
+			</main>
+		}.to_html();
+		assert_eq!(
+			rendered,
+			"<main><h1>Welcome to our benchmark page.</h1><p>Here's some introductory text.</p><div><button>-1</button><span>Value: <!>1<!>!</span><button>+1</button></div><div><button>-1</button><span>Value: <!>2<!>!</span><button>+1</button></div><div><button>-1</button><span>Value: <!>3<!>!</span><button>+1</button></div></main>"
+		);
+	});
+	rt.dispose();
 }
 
 #[bench]

benchmarks/src/todomvc/leptos.rs

@@ -1,7 +1,7 @@
 pub use leptos::*;
 use miniserde::*;
-use web_sys::HtmlInputElement;
 use wasm_bindgen::JsCast;
+use web_sys::HtmlInputElement;
 
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct Todos(pub Vec<Todo>);
@@ -9,13 +9,13 @@ pub struct Todos(pub Vec<Todo>);
 const STORAGE_KEY: &str = "todos-leptos";
 
 impl Todos {
-    pub fn new(cx: Scope) -> Self {
+    pub fn new() -> Self {
         Self(vec![])
     }
 
-    pub fn new_with_1000(cx: Scope) -> Self {
+    pub fn new_with_1000() -> Self {
         let todos = (0..1000)
-            .map(|id| Todo::new(cx, id, format!("Todo #{id}")))
+            .map(|id| Todo::new(id, format!("Todo #{id}")))
             .collect();
         Self(todos)
     }
@@ -72,13 +72,17 @@ pub struct Todo {
 }
 
 impl Todo {
-    pub fn new(cx: Scope, id: usize, title: String) -> Self {
-        Self::new_with_completed(cx, id, title, false)
+    pub fn new(id: usize, title: String) -> Self {
+        Self::new_with_completed(id, title, false)
     }
 
-    pub fn new_with_completed(cx: Scope, id: usize, title: String, completed: bool) -> Self {
-        let (title, set_title) = create_signal(cx, title);
-        let (completed, set_completed) = create_signal(cx, completed);
+    pub fn new_with_completed(
+        id: usize,
+        title: String,
+        completed: bool,
+    ) -> Self {
+        let (title, set_title) = create_signal(title);
+        let (completed, set_completed) = create_signal(completed);
         Self {
             id,
             title,
@@ -98,7 +102,7 @@ const ESCAPE_KEY: u32 = 27;
 const ENTER_KEY: u32 = 13;
 
 #[component]
-pub fn TodoMVC(cx: Scope, todos: Todos) -> impl IntoView {
+pub fn TodoMVC(todos: Todos) -> impl IntoView {
     let mut next_id = todos
         .0
         .iter()
@@ -107,10 +111,10 @@ pub fn TodoMVC(cx: Scope, todos: Todos) -> impl IntoView {
         .map(|last| last + 1)
         .unwrap_or(0);
 
-    let (todos, set_todos) = create_signal(cx, todos);
-    provide_context(cx, set_todos);
+    let (todos, set_todos) = create_signal(todos);
+    provide_context(set_todos);
 
-    let (mode, set_mode) = create_signal(cx, Mode::All);
+    let (mode, set_mode) = create_signal(Mode::All);
 
     let add_todo = move |ev: web_sys::KeyboardEvent| {
         let target = event_target::<HtmlInputElement>(&ev);
@@ -120,7 +124,7 @@ pub fn TodoMVC(cx: Scope, todos: Todos) -> impl IntoView {
             let title = event_target_value(&ev);
             let title = title.trim();
             if !title.is_empty() {
-                let new = Todo::new(cx, next_id, title.to_string());
+                let new = Todo::new(next_id, title.to_string());
                 set_todos.update(|t| t.add(new));
                 next_id += 1;
                 target.set_value("");
@@ -128,7 +132,7 @@ pub fn TodoMVC(cx: Scope, todos: Todos) -> impl IntoView {
         }
     };
 
-    let filtered_todos = create_memo::<Vec<Todo>>(cx, move |_| {
+    let filtered_todos = create_memo::<Vec<Todo>>(move |_| {
         todos.with(|todos| match mode.get() {
             Mode::All => todos.0.to_vec(),
             Mode::Active => todos
@@ -148,7 +152,7 @@ pub fn TodoMVC(cx: Scope, todos: Todos) -> impl IntoView {
 
     // effect to serialize to JSON
     // this does reactive reads, so it will automatically serialize on any relevant change
-    create_effect(cx, move |_| {
+    create_effect(move |_| {
         if let Ok(Some(storage)) = window().local_storage() {
             let objs = todos
                 .get()
@@ -163,7 +167,7 @@ pub fn TodoMVC(cx: Scope, todos: Todos) -> impl IntoView {
         }
     });
 
-    view! { cx,
+    view! { 
         <main>
             <section class="todoapp">
                 <header class="header">
@@ -188,8 +192,8 @@ pub fn TodoMVC(cx: Scope, todos: Todos) -> impl IntoView {
                         <For
                             each=filtered_todos
                             key=|todo| todo.id
-                            view=move |cx, todo: Todo| {
-                                view! { cx, <Todo todo=todo.clone()/> }
+                            children=move |todo: Todo| {
+                                view! { <Todo todo=todo.clone()/> }
                             }
                         />
                     </ul>
@@ -236,14 +240,14 @@ pub fn TodoMVC(cx: Scope, todos: Todos) -> impl IntoView {
                 <p>"Part of " <a href="http://todomvc.com">"TodoMVC"</a></p>
             </footer>
         </main>
-    }.into_view(cx)
+    }.into_view()
 }
 
 #[component]
-pub fn Todo(cx: Scope, todo: Todo) -> impl IntoView {
-    let (editing, set_editing) = create_signal(cx, false);
-    let set_todos = use_context::<WriteSignal<Todos>>(cx).unwrap();
-    //let input = NodeRef::new(cx);
+pub fn Todo(todo: Todo) -> impl IntoView {
+    let (editing, set_editing) = create_signal(false);
+    let set_todos = use_context::<WriteSignal<Todos>>().unwrap();
+    //let input = NodeRef::new();
 
     let save = move |value: &str| {
         let value = value.trim();
@@ -255,7 +259,7 @@ pub fn Todo(cx: Scope, todo: Todo) -> impl IntoView {
         set_editing(false);
     };
 
-    view! { cx,
+    view! { 
         <li class="todo" class:editing=editing class:completed=move || (todo.completed)()>
             <div class="view">
                 <input class="toggle" type="checkbox" prop:checked=move || (todo.completed)()/>
@@ -268,7 +272,7 @@ pub fn Todo(cx: Scope, todo: Todo) -> impl IntoView {
             {move || {
                 editing()
                     .then(|| {
-                        view! { cx,
+                        view! { 
                             <input
                                 class="edit"
                                 class:hidden=move || !(editing)()
@@ -319,8 +323,8 @@ pub struct TodoSerialized {
 }
 
 impl TodoSerialized {
-    pub fn into_todo(self, cx: Scope) -> Todo {
-        Todo::new_with_completed(cx, self.id, self.title, self.completed)
+    pub fn into_todo(self, ) -> Todo {
+        Todo::new_with_completed(self.id, self.title, self.completed)
     }
 }
 

benchmarks/src/todomvc/mod.rs

@@ -2,6 +2,7 @@ use test::Bencher;
 
 mod leptos;
 mod sycamore;
+mod tachys;
 mod tera;
 mod yew;
 
@@ -12,18 +13,34 @@ fn leptos_todomvc_ssr(b: &mut Bencher) {
     b.iter(|| {
         use crate::todomvc::leptos::*;
 
-        let html = ::leptos::ssr::render_to_string(|cx| {
-            view! { cx, <TodoMVC todos=Todos::new(cx)/> }
+        let html = ::leptos::ssr::render_to_string(|| {
+            view! { <TodoMVC todos=Todos::new()/> }
         });
         assert!(html.len() > 1);
     });
+    runtime.dispose();
+}
+
+#[bench]
+fn tachys_todomvc_ssr(b: &mut Bencher) {
+    use ::leptos::*;
+    let runtime = create_runtime();
+    b.iter(|| {
+        use crate::todomvc::tachys::*;
+        use tachydom::view::{Render, RenderHtml};
+
+        let rendered = TodoMVC(Todos::new()).to_html();
+        assert_eq!(
+            rendered,
+"<main><section class=\"todoapp\"><header class=\"header\"><h1>todos</h1><input placeholder=\"What needs to be done?\" autofocus class=\"new-todo\"></header><section class=\"main hidden\"><input id=\"toggle-all\" type=\"checkbox\" class=\"toggle-all\"><label for=\"toggle-all\">Mark all as complete</label><ul class=\"todo-list\"></ul></section><footer class=\"footer hidden\"><span class=\"todo-count\"><strong>0</strong><!> items<!> left</span><ul class=\"filters\"><li><a href=\"#/\" class=\"selected selected\">All</a></li><li><a href=\"#/active\" class=\"\">Active</a></li><li><a href=\"#/completed\" class=\"\">Completed</a></li></ul><button class=\"clear-completed hidden hidden\">Clear completed</button></footer></section><footer class=\"info\"><p>Double-click to edit a todo</p><p>Created by <a href=\"http://todomvc.com\">Greg Johnston</a></p><p>Part of <a href=\"http://todomvc.com\">TodoMVC</a></p></footer></main>"        );
+    });
+    runtime.dispose();
 }
 
 #[bench]
 fn sycamore_todomvc_ssr(b: &mut Bencher) {
     use self::sycamore::*;
-    use ::sycamore::prelude::*;
-    use ::sycamore::*;
+    use ::sycamore::{prelude::*, *};
 
     b.iter(|| {
         _ = create_scope(|cx| {
@@ -42,8 +59,7 @@ fn sycamore_todomvc_ssr(b: &mut Bencher) {
 #[bench]
 fn yew_todomvc_ssr(b: &mut Bencher) {
     use self::yew::*;
-    use ::yew::prelude::*;
-    use ::yew::ServerRenderer;
+    use ::yew::{prelude::*, ServerRenderer};
 
     b.iter(|| {
         tokio_test::block_on(async {
@@ -60,21 +76,33 @@ fn leptos_todomvc_ssr_with_1000(b: &mut Bencher) {
         use self::leptos::*;
         use ::leptos::*;
 
-        let html = ::leptos::ssr::render_to_string(|cx| {
+        let html = ::leptos::ssr::render_to_string(|| {
             view! {
-                cx,
-                <TodoMVC todos=Todos::new_with_1000(cx)/>
+                <TodoMVC todos=Todos::new_with_1000()/>
             }
         });
         assert!(html.len() > 1);
     });
 }
 
+#[bench]
+fn tachys_todomvc_ssr_with_1000(b: &mut Bencher) {
+    use ::leptos::*;
+    let runtime = create_runtime();
+    b.iter(|| {
+        use crate::todomvc::tachys::*;
+        use tachydom::view::{Render, RenderHtml};
+
+        let rendered = TodoMVC(Todos::new_with_1000()).to_html();
+        assert!(rendered.len() > 20_000)
+    });
+    runtime.dispose();
+}
+
 #[bench]
 fn sycamore_todomvc_ssr_with_1000(b: &mut Bencher) {
     use self::sycamore::*;
-    use ::sycamore::prelude::*;
-    use ::sycamore::*;
+    use ::sycamore::{prelude::*, *};
 
     b.iter(|| {
         _ = create_scope(|cx| {
@@ -93,8 +121,7 @@ fn sycamore_todomvc_ssr_with_1000(b: &mut Bencher) {
 #[bench]
 fn yew_todomvc_ssr_with_1000(b: &mut Bencher) {
     use self::yew::*;
-    use ::yew::prelude::*;
-    use ::yew::ServerRenderer;
+    use ::yew::{prelude::*, ServerRenderer};
 
     b.iter(|| {
         tokio_test::block_on(async {
@@ -103,4 +130,19 @@ fn yew_todomvc_ssr_with_1000(b: &mut Bencher) {
             assert!(rendered.len() > 1);
         });
     });
-}
+}
+
+#[bench]
+fn tera_todomvc_ssr(b: &mut Bencher) {
+    use ::leptos::*;
+    let runtime = create_runtime();
+    b.iter(|| {
+        use crate::todomvc::leptos::*;
+
+        let html = ::leptos::ssr::render_to_string(|| {
+            view! { <TodoMVC todos=Todos::new()/> }
+        });
+        assert!(html.len() > 1);
+    });
+    runtime.dispose();
+}

benchmarks/src/todomvc/tachys.rs

@@ -0,0 +1,333 @@
+pub use leptos_reactive::*;
+use miniserde::*;
+use tachy_maccy::view;
+use tachydom::{
+    html::{
+        attribute::global::{ClassAttribute, GlobalAttributes, OnAttribute},
+        element::ElementChild,
+    },
+    renderer::dom::Dom,
+    view::{keyed::keyed, Render, RenderHtml},
+};
+use wasm_bindgen::JsCast;
+use web_sys::HtmlInputElement;
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct Todos(pub Vec<Todo>);
+
+const STORAGE_KEY: &str = "todos-leptos";
+
+impl Todos {
+    pub fn new() -> Self {
+        Self(vec![])
+    }
+
+    pub fn new_with_1000() -> Self {
+        let todos = (0..1000)
+            .map(|id| Todo::new(id, format!("Todo #{id}")))
+            .collect();
+        Self(todos)
+    }
+
+    pub fn is_empty(&self) -> bool {
+        self.0.is_empty()
+    }
+
+    pub fn add(&mut self, todo: Todo) {
+        self.0.push(todo);
+    }
+
+    pub fn remove(&mut self, id: usize) {
+        self.0.retain(|todo| todo.id != id);
+    }
+
+    pub fn remaining(&self) -> usize {
+        self.0.iter().filter(|todo| !(todo.completed)()).count()
+    }
+
+    pub fn completed(&self) -> usize {
+        self.0.iter().filter(|todo| (todo.completed)()).count()
+    }
+
+    pub fn toggle_all(&self) {
+        // if all are complete, mark them all active instead
+        if self.remaining() == 0 {
+            for todo in &self.0 {
+                if todo.completed.get() {
+                    (todo.set_completed)(false);
+                }
+            }
+        }
+        // otherwise, mark them all complete
+        else {
+            for todo in &self.0 {
+                (todo.set_completed)(true);
+            }
+        }
+    }
+
+    fn clear_completed(&mut self) {
+        self.0.retain(|todo| !todo.completed.get());
+    }
+}
+
+#[derive(Debug, PartialEq, Eq, Clone)]
+pub struct Todo {
+    pub id: usize,
+    pub title: ReadSignal<String>,
+    pub set_title: WriteSignal<String>,
+    pub completed: ReadSignal<bool>,
+    pub set_completed: WriteSignal<bool>,
+}
+
+impl Todo {
+    pub fn new(id: usize, title: String) -> Self {
+        Self::new_with_completed(id, title, false)
+    }
+
+    pub fn new_with_completed(
+        id: usize,
+        title: String,
+        completed: bool,
+    ) -> Self {
+        let (title, set_title) = create_signal(title);
+        let (completed, set_completed) = create_signal(completed);
+        Self {
+            id,
+            title,
+            set_title,
+            completed,
+            set_completed,
+        }
+    }
+
+    pub fn toggle(&self) {
+        self.set_completed
+            .update(|completed| *completed = !*completed);
+    }
+}
+
+const ESCAPE_KEY: u32 = 27;
+const ENTER_KEY: u32 = 13;
+
+pub fn TodoMVC(todos: Todos) -> impl Render<Dom> + RenderHtml<Dom> {
+    let mut next_id = todos
+        .0
+        .iter()
+        .map(|todo| todo.id)
+        .max()
+        .map(|last| last + 1)
+        .unwrap_or(0);
+
+    let (todos, set_todos) = create_signal(todos);
+    provide_context(set_todos);
+
+    let (mode, set_mode) = create_signal(Mode::All);
+
+    let add_todo = move |ev: web_sys::KeyboardEvent| {
+        todo!()
+        /* let target = event_target::<HtmlInputElement>(&ev);
+        ev.stop_propagation();
+        let key_code = ev.unchecked_ref::<web_sys::KeyboardEvent>().key_code();
+        if key_code == ENTER_KEY {
+            let title = event_target_value(&ev);
+            let title = title.trim();
+            if !title.is_empty() {
+                let new = Todo::new(next_id, title.to_string());
+                set_todos.update(|t| t.add(new));
+                next_id += 1;
+                target.set_value("");
+            }
+        } */
+    };
+
+    let filtered_todos = create_memo::<Vec<Todo>>(move |_| {
+        todos.with(|todos| match mode.get() {
+            Mode::All => todos.0.to_vec(),
+            Mode::Active => todos
+                .0
+                .iter()
+                .filter(|todo| !todo.completed.get())
+                .cloned()
+                .collect(),
+            Mode::Completed => todos
+                .0
+                .iter()
+                .filter(|todo| todo.completed.get())
+                .cloned()
+                .collect(),
+        })
+    });
+
+    // effect to serialize to JSON
+    // this does reactive reads, so it will automatically serialize on any relevant change
+    create_effect(move |_| {
+        ()
+        /* if let Ok(Some(storage)) = window().local_storage() {
+            let objs = todos
+                .get()
+                .0
+                .iter()
+                .map(TodoSerialized::from)
+                .collect::<Vec<_>>();
+            let json = json::to_string(&objs);
+            if storage.set_item(STORAGE_KEY, &json).is_err() {
+                log::error!("error while trying to set item in localStorage");
+            }
+        } */
+    });
+
+    view! {
+        <main>
+            <section class="todoapp">
+                <header class="header">
+                    <h1>"todos"</h1>
+                    <input
+                        class="new-todo"
+                        placeholder="What needs to be done?"
+                        autofocus
+                    />
+                </header>
+                <section class="main" class:hidden=move || todos.with(|t| t.is_empty())>
+                    <input
+                        id="toggle-all"
+                        class="toggle-all"
+                        r#type="checkbox"
+                        //prop:checked=move || todos.with(|t| t.remaining() > 0)
+                        on:input=move |_| set_todos.update(|t| t.toggle_all())
+                    />
+                    <label r#for="toggle-all">"Mark all as complete"</label>
+                    <ul class="todo-list">
+                        {move || {
+                            keyed(filtered_todos.get(), |todo| todo.id, Todo)
+                        }}
+                    </ul>
+                </section>
+                <footer class="footer" class:hidden=move || todos.with(|t| t.is_empty())>
+                    <span class="todo-count">
+                        <strong>{move || todos.with(|t| t.remaining().to_string())}</strong>
+                        {move || if todos.with(|t| t.remaining()) == 1 { " item" } else { " items" }}
+                        " left"
+                    </span>
+                    <ul class="filters">
+                        <li>
+                            <a
+                                href="#/"
+                                class="selected"
+                                class:selected=move || mode() == Mode::All
+                            >
+                                "All"
+                            </a>
+                        </li>
+                        <li>
+                            <a href="#/active" class:selected=move || mode() == Mode::Active>
+                                "Active"
+                            </a>
+                        </li>
+                        <li>
+                            <a href="#/completed" class:selected=move || mode() == Mode::Completed>
+                                "Completed"
+                            </a>
+                        </li>
+                    </ul>
+                    <button
+                        class="clear-completed hidden"
+                        class:hidden=move || todos.with(|t| t.completed() == 0)
+                        on:click=move |_| set_todos.update(|t| t.clear_completed())
+                    >
+                        "Clear completed"
+                    </button>
+                </footer>
+            </section>
+            <footer class="info">
+                <p>"Double-click to edit a todo"</p>
+                <p>"Created by " <a href="http://todomvc.com">"Greg Johnston"</a></p>
+                <p>"Part of " <a href="http://todomvc.com">"TodoMVC"</a></p>
+            </footer>
+        </main>
+    }
+}
+
+pub fn Todo(todo: Todo) -> impl Render<Dom> + RenderHtml<Dom> {
+    let (editing, set_editing) = create_signal(false);
+    let set_todos = use_context::<WriteSignal<Todos>>().unwrap();
+    //let input = NodeRef::new();
+
+    let save = move |value: &str| {
+        let value = value.trim();
+        if value.is_empty() {
+            set_todos.update(|t| t.remove(todo.id));
+        } else {
+            (todo.set_title)(value.to_string());
+        }
+        set_editing(false);
+    };
+
+    view! {
+        <li class="todo" class:editing=editing class:completed=move || (todo.completed)()>
+            /* <div class="view">
+                <input class="toggle" r#type="checkbox"/>
+                <label on:dblclick=move |_| set_editing(true)>{move || todo.title.get()}</label>
+                <button
+                    class="destroy"
+                    on:click=move |_| set_todos.update(|t| t.remove(todo.id))
+                ></button>
+            </div>
+            {move || {
+                editing()
+                    .then(|| {
+                        view! {
+                            <input
+                                class="edit"
+                                class:hidden=move || !(editing)()
+                            />
+                        }
+                    })
+            }} */
+        </li>
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Mode {
+    Active,
+    Completed,
+    All,
+}
+
+impl Default for Mode {
+    fn default() -> Self {
+        Mode::All
+    }
+}
+
+pub fn route(hash: &str) -> Mode {
+    match hash {
+        "/active" => Mode::Active,
+        "/completed" => Mode::Completed,
+        _ => Mode::All,
+    }
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct TodoSerialized {
+    pub id: usize,
+    pub title: String,
+    pub completed: bool,
+}
+
+impl TodoSerialized {
+    pub fn into_todo(self) -> Todo {
+        Todo::new_with_completed(self.id, self.title, self.completed)
+    }
+}
+
+impl From<&Todo> for TodoSerialized {
+    fn from(todo: &Todo) -> Self {
+        Self {
+            id: todo.id,
+            title: todo.title.get(),
+            completed: (todo.completed)(),
+        }
+    }
+}

benchmarks/src/todomvc/tera.rs

@@ -87,7 +87,7 @@ static TEMPLATE: &str = r#"<main>
         </main>"#;
 
 #[bench]
-fn tera_todomvc(b: &mut Bencher) {
+fn tera_todomvc_ssr(b: &mut Bencher) {
     use serde::{Deserialize, Serialize};
     use tera::*;
 
@@ -127,7 +127,7 @@ fn tera_todomvc(b: &mut Bencher) {
 }
 
 #[bench]
-fn tera_todomvc_1000(b: &mut Bencher) {
+fn tera_todomvc_ssr_1000(b: &mut Bencher) {
     use serde::{Deserialize, Serialize};
     use tera::*;
 
@@ -174,4 +174,4 @@ fn tera_todomvc_1000(b: &mut Bencher) {
 
         let _ = TERA.render("template.html", &ctx).unwrap();
     });
-}
+}

cargo-make/check.toml

@@ -0,0 +1,7 @@
+[tasks.check]
+alias = "check-all"
+
+[tasks.check-all]
+command = "cargo"
+args = ["+nightly", "check-all-features"]
+install_crate = "cargo-all-features"

cargo-make/lint.toml

@@ -0,0 +1,11 @@
+[tasks.lint]
+dependencies = ["check-format-flow", "clippy-each-feature"]
+
+[tasks.check-format]
+env = { LEPTOS_PROJECT_DIRECTORY = "../" }
+args = ["fmt", "--", "--check", "--config-path", "${LEPTOS_PROJECT_DIRECTORY}"]
+
+[tasks.clippy-each-feature]
+dependencies = ["install-clippy"]
+command = "cargo"
+args = ["hack", "clippy", "--all", "--each-feature", "--no-dev-deps"]

cargo-make/main.toml

@@ -0,0 +1,15 @@
+extend = [
+    { path = "./check.toml" },
+    { path = "./lint.toml" },
+    { path = "./test.toml" },
+]
+
+[env]
+RUSTFLAGS = ""
+LEPTOS_OUTPUT_NAME = "ci" # allows examples to check/build without cargo-leptos
+
+[env.github-actions]
+RUSTFLAGS = "-D warnings"
+
+[tasks.ci]
+dependencies = ["lint", "test"]

cargo-make/test.toml

@@ -0,0 +1,7 @@
+[tasks.test]
+alias = "test-all"
+
+[tasks.test-all]
+command = "cargo"
+args = ["+nightly", "test-all-features"]
+install_crate = "cargo-all-features"

docs/COMMON_BUGS.md

@@ -9,10 +9,10 @@ This document is intended as a running list of common issues, with example code
 **Issue**: Sometimes you want to update a reactive signal in a way that depends on another signal.
 
 ```rust
-let (a, set_a) = create_signal(cx, 0);
-let (b, set_b) = create_signal(cx, false);
+let (a, set_a) = create_signal(0);
+let (b, set_b) = create_signal(false);
 
-create_effect(cx, move |_| {
+create_effect(move |_| {
 	if a() > 5 {
 		set_b(true);
 	}
@@ -24,7 +24,7 @@ This creates an inefficient chain of updates, and can easily lead to infinite lo
 **Solution**: Follow the rule, _What can be derived, should be derived._ In this case, this has the benefit of massively reducing the code size, too!
 
 ```rust
-let (a, set_a) = create_signal(cx, 0);
+let (a, set_a) = create_signal(0);
 let b = move || a () > 5;
 ```
 
@@ -34,19 +34,19 @@ Sometimes you have nested signals: for example, hash-map that can change over ti
 
 ```rust
 #[component]
-pub fn App(cx: Scope) -> impl IntoView {
-    let resources = create_rw_signal(cx, HashMap::new());
+pub fn App() -> impl IntoView {
+    let resources = create_rw_signal(HashMap::new());
 
     let update = move |id: usize| {
         resources.update(|resources| {
             resources
                 .entry(id)
-                .or_insert_with(|| create_rw_signal(cx, 0))
+                .or_insert_with(|| create_rw_signal(0))
                 .update(|amount| *amount += 1)
         })
     };
 
-    view! { cx,
+    view! {
         <div>
             <pre>{move || format!("{:#?}", resources.get().into_iter().map(|(id, resource)| (id, resource.get())).collect::<Vec<_>>())}</pre>
             <button on:click=move |_| update(1)>"+"</button>
@@ -55,17 +55,17 @@ pub fn App(cx: Scope) -> impl IntoView {
 }
 ```
 
-Clicking the button twice will cause a panic, because of the nested signal *read*. Calling the `update` function on `resources` immediately takes out a mutable borrow on `resources`, then updates the `resource` signal—which re-runs the effect that reads from the signals, which tries to immutably access `resources` and panics. It's the nested update here which causes a problem, because the inner update triggers and effect that tries to read both signals while the outer is still updating.
+Clicking the button twice will cause a panic, because of the nested signal _read_. Calling the `update` function on `resources` immediately takes out a mutable borrow on `resources`, then updates the `resource` signal—which re-runs the effect that reads from the signals, which tries to immutably access `resources` and panics. It's the nested update here which causes a problem, because the inner update triggers and effect that tries to read both signals while the outer is still updating.
 
-You can fix this fairly easily by using the [`Scope::batch()`](https://docs.rs/leptos/latest/leptos/struct.Scope.html#method.batch) method:
+You can fix this fairly easily by using the [`batch()`](https://docs.rs/leptos/latest/leptos/fn.batch.html) method:
 
 ```rust
     let update = move |id: usize| {
-        cx.batch(move || {
+        batch(move || {
             resources.update(|resources| {
                 resources
                     .entry(id)
-                    .or_insert_with(|| create_rw_signal(cx, 0))
+                    .or_insert_with(|| create_rw_signal(0))
                     .update(|amount| *amount += 1)
             })
         });
@@ -83,11 +83,11 @@ Many DOM attributes can be updated either by setting an attribute on the DOM nod
 This means that in practice, attributes like `value` or `checked` on an `<input/>` element only update the _default_ value for the `<input/>`. If you want to reactively update the value, you should use `prop:value` instead to set the `value` property.
 
 ```rust
-let (a, set_a) = create_signal(cx, "Starting value".to_string());
+let (a, set_a) = create_signal("Starting value".to_string());
 let on_input = move |ev| set_a(event_target_value(&ev));
 
 view! {
-	cx,
+
 	// ❌ reactivity doesn't work as expected: typing only updates the default
 	//    of each input, so if you start typing in the second input, it won't
 	//    update the first one
@@ -97,11 +97,11 @@ view! {
 ```
 
 ```rust
-let (a, set_a) = create_signal(cx, "Starting value".to_string());
+let (a, set_a) = create_signal("Starting value".to_string());
 let on_input = move |ev| set_a(event_target_value(&ev));
 
 view! {
-	cx,
+
 	// ✅ works as intended by setting the value *property*
 	<input prop:value=a on:input=on_input />
 	<input prop:value=a on:input=on_input />

docs/book/README.md

@@ -12,3 +12,4 @@ mdbook serve
 ```
 
 It should be available at `http://localhost:3000`.
+

docs/book/book.toml

@@ -0,0 +1,10 @@
+[output.html]
+additional-css = ["./mdbook-admonish.css"]
+[output.html.playground]
+runnable = false
+
+[preprocessor]
+
+[preprocessor.admonish]
+command = "mdbook-admonish"
+assets_version = "3.0.1" # do not edit: managed by `mdbook-admonish install`

docs/book/mdbook-admonish.css

@@ -0,0 +1,345 @@
+@charset "UTF-8";
+:root {
+  --md-admonition-icon--admonish-note: url("data:image/svg+xml;charset=utf-8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M20.71 7.04c.39-.39.39-1.04 0-1.41l-2.34-2.34c-.37-.39-1.02-.39-1.41 0l-1.84 1.83 3.75 3.75M3 17.25V21h3.75L17.81 9.93l-3.75-3.75L3 17.25z'/></svg>");
+  --md-admonition-icon--admonish-abstract: url("data:image/svg+xml;charset=utf-8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M17 9H7V7h10m0 6H7v-2h10m-3 6H7v-2h7M12 3a1 1 0 0 1 1 1 1 1 0 0 1-1 1 1 1 0 0 1-1-1 1 1 0 0 1 1-1m7 0h-4.18C14.4 1.84 13.3 1 12 1c-1.3 0-2.4.84-2.82 2H5a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2V5a2 2 0 0 0-2-2z'/></svg>");
+  --md-admonition-icon--admonish-info: url("data:image/svg+xml;charset=utf-8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M13 9h-2V7h2m0 10h-2v-6h2m-1-9A10 10 0 0 0 2 12a10 10 0 0 0 10 10 10 10 0 0 0 10-10A10 10 0 0 0 12 2z'/></svg>");
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+  padding-right: 1rem;
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+}
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+  position: absolute;
+  top: 0.625em;
+  inset-inline-end: 1.6rem;
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+  transform: rotate(90deg);
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+  border-color: #448aff;
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+  background-color: rgba(68, 138, 255, 0.1);
+}
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+
+:is(.admonition):is(.admonish-abstract, .admonish-summary, .admonish-tldr) {
+  border-color: #00b0ff;
+}
+
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+}
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+
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+}
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+}
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+  background-color: rgba(255, 82, 82, 0.1);
+}
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+  mask-repeat: no-repeat;
+  -webkit-mask-repeat: no-repeat;
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+  -webkit-mask-repeat: no-repeat;
+}
+
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+
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+  background-color: rgba(255, 23, 68, 0.1);
+}
+:is(.admonish-danger, .admonish-error) > :is(.admonition-title, summary.admonition-title)::before {
+  background-color: #ff1744;
+  mask-image: var(--md-admonition-icon--admonish-danger);
+  -webkit-mask-image: var(--md-admonition-icon--admonish-danger);
+  mask-repeat: no-repeat;
+  -webkit-mask-repeat: no-repeat;
+  mask-size: contain;
+  -webkit-mask-repeat: no-repeat;
+}
+
+:is(.admonition):is(.admonish-bug) {
+  border-color: #f50057;
+}
+
+:is(.admonish-bug) > :is(.admonition-title, summary.admonition-title) {
+  background-color: rgba(245, 0, 87, 0.1);
+}
+:is(.admonish-bug) > :is(.admonition-title, summary.admonition-title)::before {
+  background-color: #f50057;
+  mask-image: var(--md-admonition-icon--admonish-bug);
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+  mask-size: contain;
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+  border-color: #7c4dff;
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+  background-color: rgba(124, 77, 255, 0.1);
+}
+:is(.admonish-example) > :is(.admonition-title, summary.admonition-title)::before {
+  background-color: #7c4dff;
+  mask-image: var(--md-admonition-icon--admonish-example);
+  -webkit-mask-image: var(--md-admonition-icon--admonish-example);
+  mask-repeat: no-repeat;
+  -webkit-mask-repeat: no-repeat;
+  mask-size: contain;
+  -webkit-mask-repeat: no-repeat;
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+
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+  background-color: rgba(158, 158, 158, 0.1);
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+  background-color: #9e9e9e;
+  mask-image: var(--md-admonition-icon--admonish-quote);
+  -webkit-mask-image: var(--md-admonition-icon--admonish-quote);
+  mask-repeat: no-repeat;
+  -webkit-mask-repeat: no-repeat;
+  mask-size: contain;
+  -webkit-mask-repeat: no-repeat;
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+
+.navy :is(.admonition) {
+  background-color: var(--sidebar-bg);
+}
+
+.ayu :is(.admonition),
+.coal :is(.admonition) {
+  background-color: var(--theme-hover);
+}
+
+.rust :is(.admonition) {
+  background-color: var(--sidebar-bg);
+  color: var(--sidebar-fg);
+}
+.rust .admonition-anchor-link:link, .rust .admonition-anchor-link:visited {
+  color: var(--sidebar-fg);
+}

docs/book/src/01_introduction.md

@@ -1,20 +1,22 @@
 # Introduction
 
-This book is intended as an introduction to the [Leptos](https://github.com/leptos-rs/leptos) Web framework. 
-It will walk through the fundamental concepts you need to build applications, 
+This book is intended as an introduction to the [Leptos](https://github.com/leptos-rs/leptos) Web framework.
+It will walk through the fundamental concepts you need to build applications,
 beginning with a simple application rendered in the browser, and building toward a
 full-stack application with server-side rendering and hydration.
 
-The guide doesn’t assume you know anything about fine-grained reactivity or the 
-details of modern Web frameworks. It does assume you are familiar with the Rust 
+The guide doesn’t assume you know anything about fine-grained reactivity or the
+details of modern Web frameworks. It does assume you are familiar with the Rust
 programming language, HTML, CSS, and the DOM and basic Web APIs.
 
-Leptos is most similar to frameworks like [Solid](https://www.solidjs.com) (JavaScript) 
-and [Sycamore](https://sycamore-rs.netlify.app/) (Rust). There are some similarities 
-to other frameworks like React (JavaScript), Svelte (JavaScript), Yew (Rust), and 
-Dioxus (Rust), so knowledge of one of those frameworks may also make it easier to 
+Leptos is most similar to frameworks like [Solid](https://www.solidjs.com) (JavaScript)
+and [Sycamore](https://sycamore-rs.netlify.app/) (Rust). There are some similarities
+to other frameworks like React (JavaScript), Svelte (JavaScript), Yew (Rust), and
+Dioxus (Rust), so knowledge of one of those frameworks may also make it easier to
 understand Leptos.
 
 You can find more detailed docs for each part of the API at [Docs.rs](https://docs.rs/leptos/latest/leptos/).
 
-**The guide is a work in progress.**
+**Important Note**: This current version of the book reflects the `0.5.1` release. The CodeSandbox versions of the examples still reflect `0.4` and earlier APIs and are in the process of being updated.
+
+> The source code for the book is available [here](https://github.com/leptos-rs/leptos/tree/main/docs/book). PRs for typos or clarification are always welcome.

docs/book/src/02_getting_started.md

@@ -14,24 +14,51 @@ If you don’t already have it installed, you can install Trunk by running
 cargo install trunk
 ```
 
-Create a basic Rust binary project
+Create a basic Rust project
 
 ```bash
 cargo init leptos-tutorial
 ```
 
-> We recommend using `nightly` Rust, as it enables [a few nice features](https://github.com/leptos-rs/leptos#nightly-note). To use `nightly` Rust with WebAssembly, you can run
+`cd` into your new `leptos-tutorial` project and add `leptos` as a dependency
+
+```bash
+cargo add leptos --features=csr,nightly
+```
+
+> **Note**: This version of the book reflects the Leptos 0.5 release. The CodeSandbox examples have not yet been updated from 0.4 and earlier versions.
+
+Or you can leave off `nightly` if you're using stable Rust
+
+```bash
+cargo add leptos --features=csr
+```
+
+> Using `nightly` Rust, and the `nightly` feature in Leptos enables the function-call syntax for signal getters and setters that is used in most of this book.
+>
+> To use nightly Rust, you can either opt into nightly for all your Rust projects by running
 >
 > ```bash
 > rustup toolchain install nightly
 > rustup default nightly
-> rustup target add wasm32-unknown-unknown
 > ```
+>
+> or only for this project
+>
+> ```bash
+> rustup toolchain install nightly
+> cd <into your project>
+> rustup override set nightly
+> ```
+>
+> [See here for more details.](https://doc.rust-lang.org/book/appendix-07-nightly-rust.html)
+> 
+> If you’d rather use stable Rust with Leptos, you can do that too. In the guide and examples, you’ll just use the [`ReadSignal::get()`](https://docs.rs/leptos/latest/leptos/struct.ReadSignal.html#impl-SignalGet%3CT%3E-for-ReadSignal%3CT%3E) and [`WriteSignal::set()`](https://docs.rs/leptos/latest/leptos/struct.WriteSignal.html#impl-SignalGet%3CT%3E-for-ReadSignal%3CT%3E) methods instead of calling signal getters and setters as functions.
 
-`cd` into your new `leptos-tutorial` project and add `leptos` as a dependency
+Make sure you've added the `wasm32-unknown-unknown` target so that Rust can compile your code to WebAssembly to run in the browser.
 
 ```bash
-cargo add leptos
+rustup target add wasm32-unknown-unknown
 ```
 
 Create a simple `index.html` in the root of the `leptos-tutorial` directory
@@ -50,7 +77,7 @@ And add a simple “Hello, world!” to your `main.rs`
 use leptos::*;
 
 fn main() {
-    mount_to_body(|cx| view! { cx,  <p>"Hello, world!"</p> })
+    mount_to_body(|| view! { <p>"Hello, world!"</p> })
 }
 ```
 

docs/book/src/14_create_effect.md

@@ -1 +0,0 @@
-# Responding to Changes with create_effect

docs/book/src/15_global_state.md

@@ -29,15 +29,15 @@ all its children and descendants using `provide_context`.
 
 ```rust
 #[component]
-fn App(cx: Scope) -> impl IntoView {
+fn App() -> impl IntoView {
     // here we create a signal in the root that can be consumed
     // anywhere in the app.
-    let (count, set_count) = create_signal(cx, 0);
+    let (count, set_count) = create_signal(0);
     // we'll pass the setter to specific components,
     // but provide the count itself to the whole app via context
-    provide_context(cx, count);
+    provide_context(count);
 
-    view! { cx,
+    view! {
         // SetterButton is allowed to modify the count
         <SetterButton set_count/>
         // These consumers can only read from it
@@ -57,14 +57,14 @@ fn App(cx: Scope) -> impl IntoView {
 ```rust
 /// A component that does some "fancy" math with the global count
 #[component]
-fn FancyMath(cx: Scope) -> impl IntoView {
+fn FancyMath() -> impl IntoView {
     // here we consume the global count signal with `use_context`
-    let count = use_context::<ReadSignal<u32>>(cx)
+    let count = use_context::<ReadSignal<u32>>()
         // we know we just provided this in the parent component
         .expect("there to be a `count` signal provided");
     let is_even = move || count() & 1 == 0;
 
-    view! { cx,
+    view! {
         <div class="consumer blue">
             "The number "
             <strong>{count}</strong>
@@ -89,17 +89,17 @@ struct GlobalState {
 }
 
 impl GlobalState {
-    pub fn new(cx: Scope) -> Self {
+    pub fn new() -> Self {
         Self {
-            count: create_rw_signal(cx, 0),
-            name: create_rw_signal(cx, "Bob".to_string())
+            count: create_rw_signal(0),
+            name: create_rw_signal("Bob".to_string())
         }
     }
 }
 
 #[component]
-fn App(cx: Scope) -> impl IntoView {
-    provide_context(cx, GlobalState::new(cx));
+fn App() -> impl IntoView {
+    provide_context(GlobalState::new());
 
     // etc.
 }
@@ -117,8 +117,8 @@ struct GlobalState {
 }
 
 #[component]
-fn App(cx: Scope) -> impl IntoView {
-    provide_context(cx, create_rw_signal(GlobalState::default()));
+fn App() -> impl IntoView {
+    provide_context(create_rw_signal(GlobalState::default()));
 
     // etc.
 }
@@ -127,8 +127,8 @@ fn App(cx: Scope) -> impl IntoView {
 But there’s a problem: because our whole state is wrapped in one signal, updating the value of one field will cause reactive updates in parts of the UI that only depend on the other.
 
 ```rust
-let state = expect_context::<RwSignal<GlobalState>>(cx);
-view! { cx,
+let state = expect_context::<RwSignal<GlobalState>>();
+view! {
     <button on:click=move |_| state.update(|n| *n += 1)>"+1"</button>
     <p>{move || state.with(|state| state.name.clone())}</p>
 }
@@ -136,19 +136,19 @@ view! { cx,
 
 In this example, clicking the button will cause the text inside `<p>` to be updated, cloning `state.name` again! Because signals are the atomic unit of reactivity, updating any field of the signal triggers updates to everything that depends on the signal.
 
-There’s a better way. You can use take fine-grained, reactive slices by using [`create_memo`](https://docs.rs/leptos/latest/leptos/fn.create_memo.html) or [`create_slice`](https://docs.rs/leptos/latest/leptos/fn.create_slice.html) (which uses `create_memo` but also provides a setter). “Memoizing” a value means creating a new reactive value which will only update when it changes. “Memoizing a slice” means creating a new reactive value which will only update when some field of the state struct updates.
+There’s a better way. You can take fine-grained, reactive slices by using [`create_memo`](https://docs.rs/leptos/latest/leptos/fn.create_memo.html) or [`create_slice`](https://docs.rs/leptos/latest/leptos/fn.create_slice.html) (which uses `create_memo` but also provides a setter). “Memoizing” a value means creating a new reactive value which will only update when it changes. “Memoizing a slice” means creating a new reactive value which will only update when some field of the state struct updates.
 
 Here, instead of reading from the state signal directly, we create “slices” of that state with fine-grained updates via `create_slice`. Each slice signal only updates when the particular piece of the larger struct it accesses updates. This means you can create a single root signal, and then take independent, fine-grained slices of it in different components, each of which can update without notifying the others of changes.
 
 ```rust
 /// A component that updates the count in the global state.
 #[component]
-fn GlobalStateCounter(cx: Scope) -> impl IntoView {
-    let state = expect_context::<RwSignal<GlobalState>>(cx);
+fn GlobalStateCounter() -> impl IntoView {
+    let state = expect_context::<RwSignal<GlobalState>>();
 
     // `create_slice` lets us create a "lens" into the data
     let (count, set_count) = create_slice(
-        cx,
+
         // we take a slice *from* `state`
         state,
         // our getter returns a "slice" of the data
@@ -157,7 +157,7 @@ fn GlobalStateCounter(cx: Scope) -> impl IntoView {
         |state, n| state.count = n,
     );
 
-    view! { cx,
+    view! {
         <div class="consumer blue">
             <button
                 on:click=move |_| {
@@ -180,6 +180,223 @@ data flow and of fine-grained reactive updates.
 
 > **Note**: There are some significant drawbacks to this approach. Both signals and memos need to own their values, so a memo will need to clone the field’s value on every change. The most natural way to manage state in a framework like Leptos is always to provide signals that are as locally-scoped and fine-grained as they can be, not to hoist everything up into global state. But when you _do_ need some kind of global state, `create_slice` can be a useful tool.
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/1-basic-component-forked-8bte19?selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A2%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A2%7D%5D&file=%2Fsrc%2Fmain.rs)
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/15-global-state-0-5-8c2ff6?file=%2Fsrc%2Fmain.rs%3A1%2C2)
 
-<iframe src="https://codesandbox.io/p/sandbox/1-basic-component-forked-8bte19?selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A2%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A2%7D%5D&file=%2Fsrc%2Fmain.rs" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+<iframe src="https://codesandbox.io/p/sandbox/15-global-state-0-5-8c2ff6?file=%2Fsrc%2Fmain.rs%3A1%2C2" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use leptos::*;
+
+// So far, we've only been working with local state in components
+// We've only seen how to communicate between parent and child components
+// But there are also more general ways to manage global state
+//
+// The three best approaches to global state are
+// 1. Using the router to drive global state via the URL
+// 2. Passing signals through context
+// 3. Creating a global state struct and creating lenses into it with `create_slice`
+//
+// Option #1: URL as Global State
+// The next few sections of the tutorial will be about the router.
+// So for now, we'll just look at options #2 and #3.
+
+// Option #2: Pass Signals through Context
+//
+// In virtual DOM libraries like React, using the Context API to manage global
+// state is a bad idea: because the entire app exists in a tree, changing
+// some value provided high up in the tree can cause the whole app to render.
+//
+// In fine-grained reactive libraries like Leptos, this is simply not the case.
+// You can create a signal in the root of your app and pass it down to other
+// components using provide_context(). Changing it will only cause rerendering
+// in the specific places it is actually used, not the whole app.
+#[component]
+fn Option2() -> impl IntoView {
+    // here we create a signal in the root that can be consumed
+    // anywhere in the app.
+    let (count, set_count) = create_signal(0);
+    // we'll pass the setter to specific components,
+    // but provide the count itself to the whole app via context
+    provide_context(count);
+
+    view! {
+        <h1>"Option 2: Passing Signals"</h1>
+        // SetterButton is allowed to modify the count
+        <SetterButton set_count/>
+        // These consumers can only read from it
+        // But we could give them write access by passing `set_count` if we wanted
+        <div style="display: flex">
+            <FancyMath/>
+            <ListItems/>
+        </div>
+    }
+}
+
+/// A button that increments our global counter.
+#[component]
+fn SetterButton(set_count: WriteSignal<u32>) -> impl IntoView {
+    view! {
+        <div class="provider red">
+            <button on:click=move |_| set_count.update(|count| *count += 1)>
+                "Increment Global Count"
+            </button>
+        </div>
+    }
+}
+
+/// A component that does some "fancy" math with the global count
+#[component]
+fn FancyMath() -> impl IntoView {
+    // here we consume the global count signal with `use_context`
+    let count = use_context::<ReadSignal<u32>>()
+        // we know we just provided this in the parent component
+        .expect("there to be a `count` signal provided");
+    let is_even = move || count() & 1 == 0;
+
+    view! {
+        <div class="consumer blue">
+            "The number "
+            <strong>{count}</strong>
+            {move || if is_even() {
+                " is"
+            } else {
+                " is not"
+            }}
+            " even."
+        </div>
+    }
+}
+
+/// A component that shows a list of items generated from the global count.
+#[component]
+fn ListItems() -> impl IntoView {
+    // again, consume the global count signal with `use_context`
+    let count = use_context::<ReadSignal<u32>>().expect("there to be a `count` signal provided");
+
+    let squares = move || {
+        (0..count())
+            .map(|n| view! { <li>{n}<sup>"2"</sup> " is " {n * n}</li> })
+            .collect::<Vec<_>>()
+    };
+
+    view! {
+        <div class="consumer green">
+            <ul>{squares}</ul>
+        </div>
+    }
+}
+
+// Option #3: Create a Global State Struct
+//
+// You can use this approach to build a single global data structure
+// that holds the state for your whole app, and then access it by
+// taking fine-grained slices using `create_slice` or `create_memo`,
+// so that changing one part of the state doesn't cause parts of your
+// app that depend on other parts of the state to change.
+
+#[derive(Default, Clone, Debug)]
+struct GlobalState {
+    count: u32,
+    name: String,
+}
+
+#[component]
+fn Option3() -> impl IntoView {
+    // we'll provide a single signal that holds the whole state
+    // each component will be responsible for creating its own "lens" into it
+    let state = create_rw_signal(GlobalState::default());
+    provide_context(state);
+
+    view! {
+        <h1>"Option 3: Passing Signals"</h1>
+        <div class="red consumer" style="width: 100%">
+            <h2>"Current Global State"</h2>
+            <pre>
+                {move || {
+                    format!("{:#?}", state.get())
+                }}
+            </pre>
+        </div>
+        <div style="display: flex">
+            <GlobalStateCounter/>
+            <GlobalStateInput/>
+        </div>
+    }
+}
+
+/// A component that updates the count in the global state.
+#[component]
+fn GlobalStateCounter() -> impl IntoView {
+    let state = use_context::<RwSignal<GlobalState>>().expect("state to have been provided");
+
+    // `create_slice` lets us create a "lens" into the data
+    let (count, set_count) = create_slice(
+
+        // we take a slice *from* `state`
+        state,
+        // our getter returns a "slice" of the data
+        |state| state.count,
+        // our setter describes how to mutate that slice, given a new value
+        |state, n| state.count = n,
+    );
+
+    view! {
+        <div class="consumer blue">
+            <button
+                on:click=move |_| {
+                    set_count(count() + 1);
+                }
+            >
+                "Increment Global Count"
+            </button>
+            <br/>
+            <span>"Count is: " {count}</span>
+        </div>
+    }
+}
+
+/// A component that updates the count in the global state.
+#[component]
+fn GlobalStateInput() -> impl IntoView {
+    let state = use_context::<RwSignal<GlobalState>>().expect("state to have been provided");
+
+    // this slice is completely independent of the `count` slice
+    // that we created in the other component
+    // neither of them will cause the other to rerun
+    let (name, set_name) = create_slice(
+        // we take a slice *from* `state`
+        state,
+        // our getter returns a "slice" of the data
+        |state| state.name.clone(),
+        // our setter describes how to mutate that slice, given a new value
+        |state, n| state.name = n,
+    );
+
+    view! {
+        <div class="consumer green">
+            <input
+                type="text"
+                prop:value=name
+                on:input=move |ev| {
+                    set_name(event_target_value(&ev));
+                }
+            />
+            <br/>
+            <span>"Name is: " {name}</span>
+        </div>
+    }
+}
+// This `main` function is the entry point into the app
+// It just mounts our component to the <body>
+// Because we defined it as `fn App`, we can now use it in a
+// template as <App/>
+fn main() {
+    leptos::mount_to_body(|| view! { <Option2/><Option3/> })
+}
+```
+
+</details>
+</preview>

docs/book/src/SUMMARY.md

@@ -7,11 +7,13 @@
   - [Dynamic Attributes](./view/02_dynamic_attributes.md)
   - [Components and Props](./view/03_components.md)
   - [Iteration](./view/04_iteration.md)
+  - [Iterating over More Complex Data](./view/04b_iteration.md)
   - [Forms and Inputs](./view/05_forms.md)
   - [Control Flow](./view/06_control_flow.md)
   - [Error Handling](./view/07_errors.md)
   - [Parent-Child Communication](./view/08_parent_child.md)
   - [Passing Children to Components](./view/09_component_children.md)
+  - [No Macros: The View Builder Syntax](./view/builder.md)
 - [Reactivity](./reactivity/README.md)
   - [Working with Signals](./reactivity/working_with_signals.md)
   - [Responding to Changes with `create_effect`](./reactivity/14_create_effect.md)
@@ -23,7 +25,6 @@
   - [Transition](./async/12_transition.md)
   - [Actions](./async/13_actions.md)
 - [Interlude: Projecting Children](./interlude_projecting_children.md)
-- [Responding to Changes with `create_effect`](./14_create_effect.md)
 - [Global State Management](./15_global_state.md)
 - [Router](./router/README.md)
   - [Defining `<Routes/>`](./router/16_routes.md)
@@ -44,5 +45,8 @@
   - [Responses and Redirects](./server/27_response.md)
 - [Progressive Enhancement and Graceful Degradation](./progressive_enhancement/README.md)
   - [`<ActionForm/>`s](./progressive_enhancement/action_form.md)
-- [Deployment]()
-- [Appendix: Optimizing WASM Binary Size](./appendix_binary_size.md)
+- [Deployment](./deployment/README.md)
+  - [Optimizing WASM Binary Size](./deployment/binary_size.md)
+- [Guide: Islands](./islands.md)
+- [Appendix: How Does the Reactive System Work?](./appendix_reactive_graph.md)
+- [Appendix: Some Small DX Improvements](./appendix_dx.md)

docs/book/src/appendix_dx.md

@@ -0,0 +1,62 @@
+# A Running List of Small Developer Experience Improvements
+
+## Autocompletion inside `#[component]` and `#[server]`
+
+Because of the nature of macros (they can expand from anything to anything, but only if the input is exactly correct at that instant) it can be hard for rust-analyzer to do proper autocompletion and other support.
+
+But you can tell rust-analyzer to ignore certain proc macros. For `#[component]` and `#[server]` especially, which annotate function bodies but don't actually transform anything inside the body of your function, this can be really helpful.
+
+Note that this means that rust-analyzer doesn't know about your component props, which may generate its own set of errors or warnings in the IDE.
+
+VSCode `settings.json`:
+
+```json
+"rust-analyzer.procMacro.ignored": {
+	"leptos_macro": [
+		"component",
+		"server"
+	],
+}
+```
+
+neovim with lspconfig:
+
+```lua
+require('lspconfig').rust_analyzer.setup {
+  -- Other Configs ...
+  settings = {
+    ["rust-analyzer"] = {
+      -- Other Settings ...
+      procMacro = {
+        ignored = {
+            leptos_macro = {
+                "component",
+                "server",
+            },
+        },
+      },
+    },
+  }
+}
+```
+
+Helix, in `.helix/languages.toml`:
+
+```toml
+[[language]]
+name = "rust"
+
+[language-server.rust-analyzer]
+config = { procMacro = { ignored = { leptos_macro = ["component", "server"] } } }
+```
+
+```admonish info
+The Jetbrains `intellij-rust` plugin (RustRover as well) currently does not support dynamic config for macro exclusion.
+However, the project currently maintains a hardcoded list of excluded macros.
+As soon as [this open PR](https://github.com/intellij-rust/intellij-rust/pull/10873) is merged, the `component` and
+`server` macro will be excluded automatically without additional configuration needed.  
+
+Update (2023/10/02):  
+The `intellij-rust` plugin got deprecated in favor of RustRover at the same time the PR was opened, but an official
+support request was made to integrate the contents of this PR.
+```

docs/book/src/appendix_reactive_graph.md

@@ -0,0 +1,243 @@
+# Appendix: How does the Reactive System Work?
+
+You don’t need to know very much about how the reactive system actually works in order to use the library successfully. But it’s always useful to understand what’s going on behind the scenes once you start working with the framework at an advanced level.
+
+The reactive primitives you use are divided into three sets:
+
+- **Signals** (`ReadSignal`/`WriteSignal`, `RwSignal`, `Resource`, `Trigger`) Values you can actively change to trigger reactive updates.
+- **Computations** (`Memo`s) Values that depend on signals (or other computations) and derive a new reactive value through some pure computation.
+- **Effects** Observers that listen to changes in some signals or computations and run a function, causing some side effect.
+
+Derived signals are a kind of non-primitve computation: as plain closures, they simply allow you to refactor some repeated signal-based computation into a reusable function that can be called in multiple places, but they are not represented in the reactive system itself.
+
+All the other primitives actually exist in the reactive system as nodes in a reactive graph.
+
+Most of the work of the reactive system consists of propagating changes from signals to effects, possibly through some intervening memos.
+
+The assumption of the reactive system is that effects (like rendering to the DOM or making a network request) are orders of magnitude more expensive than things like updating a Rust data structure inside your app.
+
+So the **primary goal** of the reactive system is to **run effects as infrequently as possible**.
+
+Leptos does this through the construction of a reactive graph.
+
+> Leptos’s current reactive system is based heavily on the [Reactively](https://github.com/modderme123/reactively) library for JavaScript. You can read Milo’s article “[Super-Charging Fine-Grained Reactivity](https://dev.to/modderme123/super-charging-fine-grained-reactive-performance-47ph)” for an excellent account of its algorithm, as well as fine-grained reactivity in general—including some beautiful diagrams!
+
+## The Reactive Graph
+
+Signals, memos, and effects all share three characteristics:
+
+- **Value** They have a current value: either the signal’s value, or (for memos and effects) the value returned by the previous run, if any.
+- **Sources** Any other reactive primitives they depend on. (For signals, this is an empty set.)
+- **Subscribers** Any other reactive primitives that depend on them. (For effects, this is an empty set.)
+
+In reality then, signals, memos, and effects are just conventional names for one generic concept of a “node” in a reactive graph. Signals are always “root nodes,” with no sources/parents. Effects are always “leaf nodes,” with no subscribers. Memos typically have both sources and subscribers.
+
+### Simple Dependencies
+
+So imagine the following code:
+
+```rust
+// A
+let (name, set_name) = create_signal("Alice");
+
+// B
+let name_upper = create_memo(move |_| name.with(|n| n.to_uppercase()));
+
+// C
+create_effect(move |_| {
+	log!("{}", name_upper());
+});
+
+set_name("Bob");
+```
+
+You can easily imagine the reactive graph here: `name` is the only signal/origin node, the `create_effect` is the only effect/terminal node, and there’s one intervening memo.
+
+```
+A   (name)
+|
+B   (name_upper)
+|
+C   (the effect)
+```
+
+### Splitting Branches
+
+Let’s make it a little more complex.
+
+```rust
+// A
+let (name, set_name) = create_signal("Alice");
+
+// B
+let name_upper = create_memo(move |_| name.with(|n| n.to_uppercase()));
+
+// C
+let name_len = create_memo(move |_| name.len());
+
+// D
+create_effect(move |_| {
+	log!("len = {}", name_len());
+});
+
+// E
+create_effect(move |_| {
+	log!("name = {}", name_upper());
+});
+```
+
+This is also pretty straightforward: a signal source signal (`name`/`A`) divides into two parallel tracks: `name_upper`/`B` and `name_len`/`C`, each of which has an effect that depends on it.
+
+```
+ __A__
+|     |
+B     C
+|     |
+D     E
+```
+
+Now let’s update the signal.
+
+```rust
+set_name("Bob");
+```
+
+We immediately log
+
+```
+len = 3
+name = BOB
+```
+
+Let’s do it again.
+
+```rust
+set_name("Tim");
+```
+
+The log should shows
+
+```
+name = TIM
+```
+
+`len = 3` does not log again.
+
+Remember: the goal of the reactive system is to run effects as infrequently as possible. Changing `name` from `"Bob"` to `"Tim"` will cause each of the memos to re-run. But they will only notify their subscribers if their value has actually changed. `"BOB"` and `"TIM"` are different, so that effect runs again. But both names have the length `3`, so they do not run again.
+
+### Reuniting Branches
+
+One more example, of what’s sometimes called **the diamond problem**.
+
+```rust
+// A
+let (name, set_name) = create_signal("Alice");
+
+// B
+let name_upper = create_memo(move |_| name.with(|n| n.to_uppercase()));
+
+// C
+let name_len = create_memo(move |_| name.len());
+
+// D
+create_effect(move |_| {
+	log!("{} is {} characters long", name_upper(), name_len());
+});
+```
+
+What does the graph look like for this?
+
+```
+ __A__
+|     |
+B     C
+|     |
+|__D__|
+```
+
+You can see why it's called the “diamond problem.” If I’d connected the nodes with straight lines instead of bad ASCII art, it would form a diamond: two memos, each of which depend on a signal, which feed into the same effect.
+
+A naive, push-based reactive implementation would cause this effect to run twice, which would be bad. (Remember, our goal is to run effects as infrequently as we can.) For example, you could implement a reactive system such that signals and memos immediately propagate their changes all the way down the graph, through each dependency, essentially traversing the graph depth-first. In other words, updating `A` would notify `B`, which would notify `D`; then `A` would notify `C`, which would notify `D` again. This is both inefficient (`D` runs twice) and glitchy (`D` actually runs with the incorrect value for the second memo during its first run.)
+
+## Solving the Diamond Problem
+
+Any reactive implementation worth its salt is dedicated to solving this issue. There are a number of different approaches (again, [see Milo’s article](https://dev.to/modderme123/super-charging-fine-grained-reactive-performance-47ph) for an excellent overview).
+
+Here’s how ours works, in brief.
+
+A reactive node is always in one of three states:
+
+- `Clean`: it is known not to have changed
+- `Check`: it is possible it has changed
+- `Dirty`: it has definitely changed
+
+Updating a signal `Dirty` marks that signal `Dirty`, and marks all its descendants `Check`, recursively. Any of its descendants that are effects are added to a queue to be re-run.
+
+```
+    ____A (DIRTY)___
+   |               |
+B (CHECK)    C (CHECK)
+   |               |
+   |____D (CHECK)__|
+```
+
+Now those effects are run. (All of the effects will be marked `Check` at this point.) Before re-running its computation, the effect checks its parents to see if they are dirty. So
+
+- So `D` goes to `B` and checks if it is `Dirty`.
+- But `B` is also marked `Check`. So `B` does the same thing:
+  - `B` goes to `A`, and finds that it is `Dirty`.
+  - This means `B` needs to re-run, because one of its sources has changed.
+  - `B` re-runs, generating a new value, and marks itself `Clean`
+  - Because `B` is a memo, it then checks its prior value against the new value.
+  - If they are the same, `B` returns "no change." Otherwise, it returns "yes, I changed."
+- If `B` returned “yes, I changed,” `D` knows that it definitely needs to run and re-runs immediately before checking any other sources.
+- If `B` returned “no, I didn’t change,” `D` continues on to check `C` (see process above for `B`.)
+- If neither `B` nor `C` has changed, the effect does not need to re-run.
+- If either `B` or `C` did change, the effect now re-runs.
+
+Because the effect is only marked `Check` once and only queued once, it only runs once.
+
+If the naive version was a “push-based” reactive system, simply pushing reactive changes all the way down the graph and therefore running the effect twice, this version could be called “push-pull.” It pushes the `Check` status all the way down the graph, but then “pulls” its way back up. In fact, for large graphs it may end up bouncing back up and down and left and right on the graph as it tries to determine exactly which nodes need to re-run.
+
+**Note this important trade-off**: Push-based reactivity propagates signal changes more quickly, at the expense of over-re-running memos and effects. Remember: the reactive system is designed to minimize how often you re-run effects, on the (accurate) assumption that side effects are orders of magnitude more expensive than this kind of cache-friendly graph traversal happening entirely inside the library’s Rust code. The measurement of a good reactive system is not how quickly it propagates changes, but how quickly it propagates changes _without over-notifying_.
+
+## Memos vs. Signals
+
+Note that signals always notify their children; i.e., a signal is always marked `Dirty` when it updates, even if its new value is the same as the old value. Otherwise, we’d have to require `PartialEq` on signals, and this is actually quite an expensive check on some types. (For example, add an unnecessary equality check to something like `some_vec_signal.update(|n| n.pop())` when it’s clear that it has in fact changed.)
+
+Memos, on the other hand, check whether they change before notifying their children. They only run their calculation once, no matter how many times you `.get()` the result, but they run whenever their signal sources change. This means that if the memo’s computation is _very_ expensive, you may actually want to memoize its inputs as well, so that the memo only re-calculates when it is sure its inputs have changed.
+
+## Memos vs. Derived Signals
+
+All of this is cool, and memos are pretty great. But most actual applications have reactive graphs that are quite shallow and quite wide: you might have 100 source signals and 500 effects, but no memos or, in rare case, three or four memos between the signal and the effect. Memos are extremely good at what they do: limiting how often they notify their subscribers that they have changed. But as this description of the reactive system should show, they come with overhead in two forms:
+
+1. A `PartialEq` check, which may or may not be expensive.
+2. Added memory cost of storing another node in the reactive system.
+3. Added computational cost of reactive graph traversal.
+
+In cases in which the computation itself is cheaper than this reactive work, you should avoid “over-wrapping” with memos and simply use derived signals. Here’s a great example in which you should never use a memo:
+
+```rust
+let (a, set_a) = create_signal(1);
+// none of these make sense as memos
+let b = move || a() + 2;
+let c = move || b() % 2 == 0;
+let d = move || if c() { "even" } else { "odd" };
+
+set_a(2);
+set_a(3);
+set_a(5);
+```
+
+Even though memoizing would technically save an extra calculation of `d` between setting `a` to `3` and `5`, these calculations are themselves cheaper than the reactive algorithm.
+
+At the very most, you might consider memoizing the final node before running some expensive side effect:
+
+```rust
+let text = create_memo(move |_| {
+    d()
+});
+create_effect(move |_| {
+    engrave_text_into_bar_of_gold(&text());
+});
+```

docs/book/src/async/10_resources.md

@@ -2,7 +2,7 @@
 
 A [Resource](https://docs.rs/leptos/latest/leptos/struct.Resource.html) is a reactive data structure that reflects the current state of an asynchronous task, allowing you to integrate asynchronous `Future`s into the synchronous reactive system. Rather than waiting for its data to load with `.await`, you transform the `Future` into a signal that returns `Some(T)` if it has resolved, and `None` if it’s still pending.
 
-You do this by using the [`create_resource`](https://docs.rs/leptos/latest/leptos/fn.create_resource.html) function. This takes two arguments (other than the ubiquitous `cx`):
+You do this by using the [`create_resource`](https://docs.rs/leptos/latest/leptos/fn.create_resource.html) function. This takes two arguments:
 
 1. a source signal, which will generate a new `Future` whenever it changes
 2. a fetcher function, which takes the data from that signal and returns a `Future`
@@ -11,14 +11,14 @@ Here’s an example
 
 ```rust
 // our source signal: some synchronous, local state
-let (count, set_count) = create_signal(cx, 0);
+let (count, set_count) = create_signal(0);
 
 // our resource
-let async_data = create_resource(cx,
+let async_data = create_resource(
     count,
     // every time `count` changes, this will run
     |value| async move {
-        log!("loading data from API");
+        logging::log!("loading data from API");
         load_data(value).await
     },
 );
@@ -27,29 +27,110 @@ let async_data = create_resource(cx,
 To create a resource that simply runs once, you can pass a non-reactive, empty source signal:
 
 ```rust
-let once = create_resource(cx, || (), |_| async move { load_data().await });
+let once = create_resource(|| (), |_| async move { load_data().await });
 ```
 
-To access the value you can use `.read(cx)` or `.with(cx, |data| /* */)`. These work just like `.get()` and `.with()` on a signal—`read` clones the value and returns it, `with` applies a closure to it—but with two differences
-
-1. For any `Resource<_, T>`, they always return `Option<T>`, not `T`: because it’s always possible that your resource is still loading.
-2. They take a `Scope` argument. You’ll see why in the next chapter, on `<Suspense/>`.
+To access the value you can use `.get()` or `.with(|data| /* */)`. These work just like `.get()` and `.with()` on a signal—`get` clones the value and returns it, `with` applies a closure to it—but for any `Resource<_, T>`, they always return `Option<T>`, not `T`: because it’s always possible that your resource is still loading.
 
 So, you can show the current state of a resource in your view:
 
 ```rust
-let once = create_resource(cx, || (), |_| async move { load_data().await });
-view! { cx,
+let once = create_resource(|| (), |_| async move { load_data().await });
+view! {
     <h1>"My Data"</h1>
-    {move || match once.read(cx) {
-        None => view! { cx, <p>"Loading..."</p> }.into_view(cx),
-        Some(data) => view! { cx, <ShowData data/> }.into_view(cx)
+    {move || match once.get() {
+        None => view! { <p>"Loading..."</p> }.into_view(),
+        Some(data) => view! { <ShowData data/> }.into_view()
     }}
 }
 ```
 
 Resources also provide a `refetch()` method that allows you to manually reload the data (for example, in response to a button click) and a `loading()` method that returns a `ReadSignal<bool>` indicating whether the resource is currently loading or not.
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/10-async-resources-4z0qt3?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A3%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A3%7D%5D)
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/10-resources-0-5-x6h5j6?file=%2Fsrc%2Fmain.rs%3A2%2C3)
 
-<iframe src="https://codesandbox.io/p/sandbox/10-async-resources-4z0qt3?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A3%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A3%7D%5D" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+<iframe src="https://codesandbox.io/p/sandbox/10-resources-0-5-9jq86q?file=%2Fsrc%2Fmain.rs%3A2%2C3" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use gloo_timers::future::TimeoutFuture;
+use leptos::*;
+
+// Here we define an async function
+// This could be anything: a network request, database read, etc.
+// Here, we just multiply a number by 10
+async fn load_data(value: i32) -> i32 {
+    // fake a one-second delay
+    TimeoutFuture::new(1_000).await;
+    value * 10
+}
+
+#[component]
+fn App() -> impl IntoView {
+    // this count is our synchronous, local state
+    let (count, set_count) = create_signal(0);
+
+    // create_resource takes two arguments after its scope
+    let async_data = create_resource(
+        // the first is the "source signal"
+        count,
+        // the second is the loader
+        // it takes the source signal's value as its argument
+        // and does some async work
+        |value| async move { load_data(value).await },
+    );
+    // whenever the source signal changes, the loader reloads
+
+    // you can also create resources that only load once
+    // just return the unit type () from the source signal
+    // that doesn't depend on anything: we just load it once
+    let stable = create_resource(|| (), |_| async move { load_data(1).await });
+
+    // we can access the resource values with .get()
+    // this will reactively return None before the Future has resolved
+    // and update to Some(T) when it has resolved
+    let async_result = move || {
+        async_data
+            .get()
+            .map(|value| format!("Server returned {value:?}"))
+            // This loading state will only show before the first load
+            .unwrap_or_else(|| "Loading...".into())
+    };
+
+    // the resource's loading() method gives us a
+    // signal to indicate whether it's currently loading
+    let loading = async_data.loading();
+    let is_loading = move || if loading() { "Loading..." } else { "Idle." };
+
+    view! {
+        <button
+            on:click=move |_| {
+                set_count.update(|n| *n += 1);
+            }
+        >
+            "Click me"
+        </button>
+        <p>
+            <code>"stable"</code>": " {move || stable.get()}
+        </p>
+        <p>
+            <code>"count"</code>": " {count}
+        </p>
+        <p>
+            <code>"async_value"</code>": "
+            {async_result}
+            <br/>
+            {is_loading}
+        </p>
+    }
+}
+
+fn main() {
+    leptos::mount_to_body(App)
+}
+```
+
+</details>
+</preview>

docs/book/src/async/11_suspense.md

@@ -3,14 +3,14 @@
 In the previous chapter, we showed how you can create a simple loading screen to show some fallback while a resource is loading.
 
 ```rust
-let (count, set_count) = create_signal(cx, 0);
-let a = create_resource(cx, count, |count| async move { load_a(count).await });
+let (count, set_count) = create_signal(0);
+let once = create_resource(count, |count| async move { load_a(count).await });
 
-view! { cx,
+view! {
     <h1>"My Data"</h1>
-    {move || match once.read(cx) {
-        None => view! { cx, <p>"Loading..."</p> }.into_view(cx),
-        Some(data) => view! { cx, <ShowData data/> }.into_view(cx)
+    {move || match once.get() {
+        None => view! { <p>"Loading..."</p> }.into_view(),
+        Some(data) => view! { <ShowData data/> }.into_view()
     }}
 }
 ```
@@ -18,19 +18,19 @@ view! { cx,
 But what if we have two resources, and want to wait for both of them?
 
 ```rust
-let (count, set_count) = create_signal(cx, 0);
-let (count2, set_count2) = create_signal(cx, 0);
-let a = create_resource(cx, count, |count| async move { load_a(count).await });
-let b = create_resource(cx, count2, |count| async move { load_b(count).await });
+let (count, set_count) = create_signal(0);
+let (count2, set_count2) = create_signal(0);
+let a = create_resource(count, |count| async move { load_a(count).await });
+let b = create_resource(count2, |count| async move { load_b(count).await });
 
-view! { cx,
+view! {
     <h1>"My Data"</h1>
-    {move || match (a.read(cx), b.read(cx)) {
-        (Some(a), Some(b)) => view! { cx,
+    {move || match (a.get(), b.get()) {
+        (Some(a), Some(b)) => view! {
             <ShowA a/>
             <ShowA b/>
-        }.into_view(cx),
-        _ => view! { cx, <p>"Loading..."</p> }.into_view(cx)
+        }.into_view(),
+        _ => view! { <p>"Loading..."</p> }.into_view()
     }}
 }
 ```
@@ -40,26 +40,26 @@ That’s not _so_ bad, but it’s kind of annoying. What if we could invert the
 The [`<Suspense/>`](https://docs.rs/leptos/latest/leptos/fn.Suspense.html) component lets us do exactly that. You give it a `fallback` prop and children, one or more of which usually involves reading from a resource. Reading from a resource “under” a `<Suspense/>` (i.e., in one of its children) registers that resource with the `<Suspense/>`. If it’s still waiting for resources to load, it shows the `fallback`. When they’ve all loaded, it shows the children.
 
 ```rust
-let (count, set_count) = create_signal(cx, 0);
-let (count2, set_count2) = create_signal(cx, 0);
-let a = create_resource(cx, count, |count| async move { load_a(count).await });
-let b = create_resource(cx, count2, |count| async move { load_b(count).await });
+let (count, set_count) = create_signal(0);
+let (count2, set_count2) = create_signal(0);
+let a = create_resource(count, |count| async move { load_a(count).await });
+let b = create_resource(count2, |count| async move { load_b(count).await });
 
-view! { cx,
+view! {
     <h1>"My Data"</h1>
     <Suspense
-        fallback=move || view! { cx, <p>"Loading..."</p> }
+        fallback=move || view! { <p>"Loading..."</p> }
     >
         <h2>"My Data"</h2>
         <h3>"A"</h3>
         {move || {
-            a.read(cx)
-                .map(|a| view! { cx, <ShowA a/> })
+            a.get()
+                .map(|a| view! { <ShowA a/> })
         }}
         <h3>"B"</h3>
         {move || {
-            b.read(cx)
-                .map(|b| view! { cx, <ShowB b/> })
+            b.get()
+                .map(|b| view! { <ShowB b/> })
         }}
     </Suspense>
 }
@@ -69,6 +69,88 @@ Every time one of the resources is reloading, the `"Loading..."` fallback will s
 
 This inversion of the flow of control makes it easier to add or remove individual resources, as you don’t need to handle the matching yourself. It also unlocks some massive performance improvements during server-side rendering, which we’ll talk about during a later chapter.
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/11-suspense-907niv?file=%2Fsrc%2Fmain.rs)
+## `<Await/>`
 
-<iframe src="https://codesandbox.io/p/sandbox/11-suspense-907niv?file=%2Fsrc%2Fmain.rs" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+In you’re simply trying to wait for some `Future` to resolve before rendering, you may find the `<Await/>` component helpful in reducing boilerplate. `<Await/>` essentially combines a resource with the source argument `|| ()` with a `<Suspense/>` with no fallback.
+
+In other words:
+
+1. It only polls the `Future` once, and does not respond to any reactive changes.
+2. It does not render anything until the `Future` resolves.
+3. After the `Future` resolves, its binds its data to whatever variable name you choose and then renders its children with that variable in scope.
+
+```rust
+async fn fetch_monkeys(monkey: i32) -> i32 {
+    // maybe this didn't need to be async
+    monkey * 2
+}
+view! {
+    <Await
+        // `future` provides the `Future` to be resolved
+        future=|| fetch_monkeys(3)
+        // the data is bound to whatever variable name you provide
+        let:data
+    >
+        // you receive the data by reference and can use it in your view here
+        <p>{*data} " little monkeys, jumping on the bed."</p>
+    </Await>
+}
+```
+
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/11-suspense-0-5-qzpgqs?file=%2Fsrc%2Fmain.rs%3A1%2C1)
+
+<iframe src="https://codesandbox.io/p/sandbox/11-suspense-0-5-qzpgqs?file=%2Fsrc%2Fmain.rs%3A1%2C1" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use gloo_timers::future::TimeoutFuture;
+use leptos::*;
+
+async fn important_api_call(name: String) -> String {
+    TimeoutFuture::new(1_000).await;
+    name.to_ascii_uppercase()
+}
+
+#[component]
+fn App() -> impl IntoView {
+    let (name, set_name) = create_signal("Bill".to_string());
+
+    // this will reload every time `name` changes
+    let async_data = create_resource(
+
+        name,
+        |name| async move { important_api_call(name).await },
+    );
+
+    view! {
+        <input
+            on:input=move |ev| {
+                set_name(event_target_value(&ev));
+            }
+            prop:value=name
+        />
+        <p><code>"name:"</code> {name}</p>
+        <Suspense
+            // the fallback will show whenever a resource
+            // read "under" the suspense is loading
+            fallback=move || view! { <p>"Loading..."</p> }
+        >
+            // the children will be rendered once initially,
+            // and then whenever any resources has been resolved
+            <p>
+                "Your shouting name is "
+                {move || async_data.get()}
+            </p>
+        </Suspense>
+    }
+}
+
+fn main() {
+    leptos::mount_to_body(App)
+}
+```
+
+</details>
+</preview>

docs/book/src/async/12_transition.md

@@ -1,11 +1,83 @@
 # `<Transition/>`
 
-You’ll notice in the `<Suspense/>` example that if you keep reloading the data, it keeps flickering back to `"Loading..."`. Sometimes this is fine. For other times, there’s [`<Transition/>`](https://docs.rs/leptos/latest/leptos/fn.Suspense.html).
+You’ll notice in the `<Suspense/>` example that if you keep reloading the data, it keeps flickering back to `"Loading..."`. Sometimes this is fine. For other times, there’s [`<Transition/>`](https://docs.rs/leptos/latest/leptos/fn.Transition.html).
 
 `<Transition/>` behaves exactly the same as `<Suspense/>`, but instead of falling back every time, it only shows the fallback the first time. On all subsequent loads, it continues showing the old data until the new data are ready. This can be really handy to prevent the flickering effect, and to allow users to continue interacting with your application.
 
 This example shows how you can create a simple tabbed contact list with `<Transition/>`. When you select a new tab, it continues showing the current contact until the new data loads. This can be a much better user experience than constantly falling back to a loading message.
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/12-transition-sn38sd?selection=%5B%7B%22endColumn%22%3A15%2C%22endLineNumber%22%3A2%2C%22startColumn%22%3A15%2C%22startLineNumber%22%3A2%7D%5D&file=%2Fsrc%2Fmain.rs)
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/12-transition-0-5-2jg5lz?file=%2Fsrc%2Fmain.rs%3A1%2C1)
 
-<iframe src="https://codesandbox.io/p/sandbox/12-transition-sn38sd?selection=%5B%7B%22endColumn%22%3A15%2C%22endLineNumber%22%3A2%2C%22startColumn%22%3A15%2C%22startLineNumber%22%3A2%7D%5D&file=%2Fsrc%2Fmain.rs" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+<iframe src="https://codesandbox.io/p/sandbox/12-transition-0-5-2jg5lz?file=%2Fsrc%2Fmain.rs%3A1%2C1" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use gloo_timers::future::TimeoutFuture;
+use leptos::*;
+
+async fn important_api_call(id: usize) -> String {
+    TimeoutFuture::new(1_000).await;
+    match id {
+        0 => "Alice",
+        1 => "Bob",
+        2 => "Carol",
+        _ => "User not found",
+    }
+    .to_string()
+}
+
+#[component]
+fn App() -> impl IntoView {
+    let (tab, set_tab) = create_signal(0);
+
+    // this will reload every time `tab` changes
+    let user_data = create_resource(tab, |tab| async move { important_api_call(tab).await });
+
+    view! {
+        <div class="buttons">
+            <button
+                on:click=move |_| set_tab(0)
+                class:selected=move || tab() == 0
+            >
+                "Tab A"
+            </button>
+            <button
+                on:click=move |_| set_tab(1)
+                class:selected=move || tab() == 1
+            >
+                "Tab B"
+            </button>
+            <button
+                on:click=move |_| set_tab(2)
+                class:selected=move || tab() == 2
+            >
+                "Tab C"
+            </button>
+            {move || if user_data.loading().get() {
+                "Loading..."
+            } else {
+                ""
+            }}
+        </div>
+        <Transition
+            // the fallback will show initially
+            // on subsequent reloads, the current child will
+            // continue showing
+            fallback=move || view! { <p>"Loading..."</p> }
+        >
+            <p>
+                {move || user_data.read()}
+            </p>
+        </Transition>
+    }
+}
+
+fn main() {
+    leptos::mount_to_body(App)
+}
+```
+
+</details>
+</preview>

docs/book/src/async/13_actions.md

@@ -11,27 +11,27 @@ Actions and resources seem similar, but they represent fundamentally different t
 Say we have some `async` function we want to run.
 
 ```rust
-async fn add_todo(new_title: &str) -> Uuid {
+async fn add_todo_request(new_title: &str) -> Uuid {
     /* do some stuff on the server to add a new todo */
 }
 ```
 
-`create_action` takes a reactive `Scope` and an `async` function that takes a reference to a single argument, which you could think of as its “input type.”
+`create_action` takes an `async` function that takes a reference to a single argument, which you could think of as its “input type.”
 
 > The input is always a single type. If you want to pass in multiple arguments, you can do it with a struct or tuple.
 >
 > ```rust
 > // if there's a single argument, just use that
-> let action1 = create_action(cx, |input: &String| {
+> let action1 = create_action(|input: &String| {
 >    let input = input.clone();
 >    async move { todo!() }
 > });
 >
 > // if there are no arguments, use the unit type `()`
-> let action2 = create_action(cx, |input: &()| async { todo!() });
+> let action2 = create_action(|input: &()| async { todo!() });
 >
 > // if there are multiple arguments, use a tuple
-> let action3 = create_action(cx,
+> let action3 = create_action(
 >   |input: &(usize, String)| async { todo!() }
 > );
 > ```
@@ -41,16 +41,16 @@ async fn add_todo(new_title: &str) -> Uuid {
 So in this case, all we need to do to create an action is
 
 ```rust
-let add_todo = create_action(cx, |input: &String| {
+let add_todo_action = create_action(|input: &String| {
     let input = input.to_owned();
-    async move { add_todo(&input).await }
+    async move { add_todo_request(&input).await }
 });
 ```
 
-Rather than calling `add_todo` directly, we’ll call it with `.dispatch()`, as in
+Rather than calling `add_todo_action` directly, we’ll call it with `.dispatch()`, as in
 
 ```rust
-add_todo.dispatch("Some value".to_string());
+add_todo_action.dispatch("Some value".to_string());
 ```
 
 You can do this from an event listener, a timeout, or anywhere; because `.dispatch()` isn’t an `async` function, it can be called from a synchronous context.
@@ -58,22 +58,22 @@ You can do this from an event listener, a timeout, or anywhere; because `.dispat
 Actions provide access to a few signals that synchronize between the asynchronous action you’re calling and the synchronous reactive system:
 
 ```rust
-let submitted = add_todo.input(); // RwSignal<Option<String>>
-let pending = add_todo.pending(); // ReadSignal<bool>
-let todo_id = add_todo.value(); // RwSignal<Option<Uuid>>
+let submitted = add_todo_action.input(); // RwSignal<Option<String>>
+let pending = add_todo_action.pending(); // ReadSignal<bool>
+let todo_id = add_todo_action.value(); // RwSignal<Option<Uuid>>
 ```
 
 This makes it easy to track the current state of your request, show a loading indicator, or do “optimistic UI” based on the assumption that the submission will succeed.
 
 ```rust
-let input_ref = create_node_ref::<Input>(cx);
+let input_ref = create_node_ref::<Input>();
 
-view! { cx,
+view! {
     <form
         on:submit=move |ev| {
             ev.prevent_default(); // don't reload the page...
             let input = input_ref.get().expect("input to exist");
-            add_todo.dispatch(input.value());
+            add_todo_action.dispatch(input.value());
         }
     >
         <label>
@@ -91,6 +91,86 @@ view! { cx,
 
 Now, there’s a chance this all seems a little over-complicated, or maybe too restricted. I wanted to include actions here, alongside resources, as the missing piece of the puzzle. In a real Leptos app, you’ll actually most often use actions alongside server functions, [`create_server_action`](https://docs.rs/leptos/latest/leptos/fn.create_server_action.html), and the [`<ActionForm/>`](https://docs.rs/leptos_router/latest/leptos_router/fn.ActionForm.html) component to create really powerful progressively-enhanced forms. So if this primitive seems useless to you... Don’t worry! Maybe it will make sense later. (Or check out our [`todo_app_sqlite`](https://github.com/leptos-rs/leptos/blob/main/examples/todo_app_sqlite/src/todo.rs) example now.)
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/10-async-resources-forked-hgpfp0?selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A4%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A4%7D%5D&file=%2Fsrc%2Fmain.rs)
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/13-actions-0-5-8xk35v?file=%2Fsrc%2Fmain.rs%3A1%2C1)
 
-<iframe src="https://codesandbox.io/p/sandbox/10-async-resources-forked-hgpfp0?selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A4%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A4%7D%5D&file=%2Fsrc%2Fmain.rs" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+<iframe src="https://codesandbox.io/p/sandbox/13-actions-0-5-8xk35v?file=%2Fsrc%2Fmain.rs%3A1%2C1" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use gloo_timers::future::TimeoutFuture;
+use leptos::{html::Input, *};
+use uuid::Uuid;
+
+// Here we define an async function
+// This could be anything: a network request, database read, etc.
+// Think of it as a mutation: some imperative async action you run,
+// whereas a resource would be some async data you load
+async fn add_todo(text: &str) -> Uuid {
+    _ = text;
+    // fake a one-second delay
+    TimeoutFuture::new(1_000).await;
+    // pretend this is a post ID or something
+    Uuid::new_v4()
+}
+
+#[component]
+fn App() -> impl IntoView {
+    // an action takes an async function with single argument
+    // it can be a simple type, a struct, or ()
+    let add_todo = create_action(|input: &String| {
+        // the input is a reference, but we need the Future to own it
+        // this is important: we need to clone and move into the Future
+        // so it has a 'static lifetime
+        let input = input.to_owned();
+        async move { add_todo(&input).await }
+    });
+
+    // actions provide a bunch of synchronous, reactive variables
+    // that tell us different things about the state of the action
+    let submitted = add_todo.input();
+    let pending = add_todo.pending();
+    let todo_id = add_todo.value();
+
+    let input_ref = create_node_ref::<Input>();
+
+    view! {
+        <form
+            on:submit=move |ev| {
+                ev.prevent_default(); // don't reload the page...
+                let input = input_ref.get().expect("input to exist");
+                add_todo.dispatch(input.value());
+            }
+        >
+            <label>
+                "What do you need to do?"
+                <input type="text"
+                    node_ref=input_ref
+                />
+            </label>
+            <button type="submit">"Add Todo"</button>
+        </form>
+        <p>{move || pending().then(|| "Loading...")}</p>
+        <p>
+            "Submitted: "
+            <code>{move || format!("{:#?}", submitted())}</code>
+        </p>
+        <p>
+            "Pending: "
+            <code>{move || format!("{:#?}", pending())}</code>
+        </p>
+        <p>
+            "Todo ID: "
+            <code>{move || format!("{:#?}", todo_id())}</code>
+        </p>
+    }
+}
+
+fn main() {
+    leptos::mount_to_body(App)
+}
+```
+
+</details>
+</preview>

docs/book/src/deployment/README.md

@@ -0,0 +1,74 @@
+# Deployment
+
+There are as many ways to deploy a web application as there are developers, let alone applications. But there are a couple useful tips to keep in mind when deploying an app.
+
+## General Advice
+
+1. Remember: Always deploy Rust apps built in `--release` mode, not debug mode. This has a huge effect on both performance and binary size.
+2. Test locally in release mode as well. The framework applies certain optimizations in release mode that it does not apply in debug mode, so it’s possible for bugs to surface at this point. (If your app behaves differently or you do encounter a bug, it’s likely a framework-level bug and you should open a GitHub issue with a reproduction.)
+3. See the chapter on "Optimizing WASM Binary Size" for additional tips and tricks to further improve the time-to-interactive metric for your WASM app on first load.
+
+> We asked users to submit their deployment setups to help with this chapter. I’ll quote from them below, but you can read the full thread [here](https://github.com/leptos-rs/leptos/issues/1152).
+
+## Deploying a Client-Side-Rendered App
+
+If you’ve been building an app that only uses client-side rendering, working with Trunk as a dev server and build tool, the process is quite easy.
+
+```bash
+trunk build --release
+```
+
+`trunk build` will create a number of build artifacts in a `dist/` directory. Publishing `dist` somewhere online should be all you need to deploy your app. This should work very similarly to deploying any JavaScript application.
+
+> Read more: [Deploying to Vercel with GitHub Actions](https://github.com/leptos-rs/leptos/issues/1152#issuecomment-1577861900).
+
+## Deploying a Full-Stack App
+
+The most popular way for people to deploy full-stack apps built with `cargo-leptos` is to use a cloud hosting service that supports deployment via a Docker build. Here’s a sample `Dockerfile`, which is based on the one we use to deploy the Leptos website.
+
+```dockerfile
+# Get started with a build env with Rust nightly
+FROM rustlang/rust:nightly-bullseye as builder
+
+# If you’re using stable, use this instead
+# FROM rust:1.70-bullseye as builder
+
+# Install cargo-binstall, which makes it easier to install other
+# cargo extensions like cargo-leptos
+RUN wget https://github.com/cargo-bins/cargo-binstall/releases/latest/download/cargo-binstall-x86_64-unknown-linux-musl.tgz
+RUN tar -xvf cargo-binstall-x86_64-unknown-linux-musl.tgz
+RUN cp cargo-binstall /usr/local/cargo/bin
+
+# Install cargo-leptos
+RUN cargo binstall cargo-leptos -y
+
+# Add the WASM target
+RUN rustup target add wasm32-unknown-unknown
+
+# Make an /app dir, which everything will eventually live in
+RUN mkdir -p /app
+WORKDIR /app
+COPY . .
+
+# Build the app
+RUN cargo leptos build --release -vv
+
+FROM rustlang/rust:nightly-bullseye as runner
+# Copy the server binary to the /app directory
+COPY --from=builder /app/target/release/leptos-start /app/
+# /target/site contains our JS/WASM/CSS, etc.
+COPY --from=builder /app/target/site /app/site
+# Copy Cargo.toml if it’s needed at runtime
+COPY --from=builder /app/Cargo.toml /app/
+WORKDIR /app
+
+# Set any required env variables and
+ENV RUST_LOG="info"
+ENV LEPTOS_SITE_ADDR="0.0.0.0:8080"
+ENV LEPTOS_SITE_ROOT="site"
+EXPOSE 8080
+# Run the server
+CMD ["/app/leptos_start"]
+```
+
+> Read more: [`gnu` and `musl` build files for Leptos apps](https://github.com/leptos-rs/leptos/issues/1152#issuecomment-1634916088).

docs/book/src/deployment/binary_size.md

@@ -1,4 +1,4 @@
-# Appendix: Optimizing WASM Binary Size
+# Optimizing WASM Binary Size
 
 One of the primary downsides of deploying a Rust/WebAssembly frontend app is that splitting a WASM file into smaller chunks to be dynamically loaded is significantly more difficult than splitting a JavaScript bundle. There have been experiments like [`wasm-split`](https://emscripten.org/docs/optimizing/Module-Splitting.html) in the Emscripten ecosystem but at present there’s no way to split and dynamically load a Rust/`wasm-bindgen` binary. This means that the whole WASM binary needs to be loaded before your app becomes interactive. Because the WASM format is designed for streaming compilation, WASM files are much faster to compile per kilobyte than JavaScript files. (For a deeper look, you can [read this great article from the Mozilla team](https://hacks.mozilla.org/2018/01/making-webassembly-even-faster-firefoxs-new-streaming-and-tiering-compiler/) on streaming WASM compilation.)
 
@@ -47,19 +47,25 @@ Note that if you're using this with SSR too, the same Cargo profile will be appl
 target = "x86_64-unknown-linux-gnu" # or whatever
 ```
 
+Also note that in some cases, the cfg feature `has_std` will not be set, which may cause build errors with some dependencies which check for `has_std`. You may fix any build errors due to this by adding:
+```toml
+[build]
+rustflags = ["--cfg=has_std"]
+```
+
 And you'll need to add `panic = "abort"` to `[profile.release]` in `Cargo.toml`. Note that this applies the same `build-std` and panic settings to your server binary, which may not be desirable. Some further exploration is probably needed here.
 
 5. One of the sources of binary size in WASM binaries can be `serde` serialization/deserialization code. Leptos uses `serde` by default to serialize and deserialize resources created with `create_resource`. You might try experimenting with the `miniserde` and `serde-lite` features, which allow you to use those crates for serialization and deserialization instead; each only implements a subset of `serde`’s functionality, but typically optimizes for size over speed.
 
 ## Things to Avoid
 
-There are certain crates that tend to inflate binary sizes. For example, the `regex` crate with its default features adds about 500kb to a WASM binary (largely because it has to pull in Unicode table data!) In a size-conscious setting, you might consider avoiding regexes in general, or even dropping down and calling browser APIs to use the built-in regex engine instead. (This is what `leptos_router` does on the few occasions it needs a regular expression.)
+There are certain crates that tend to inflate binary sizes. For example, the `regex` crate with its default features adds about 500kb to a WASM binary (largely because it has to pull in Unicode table data!). In a size-conscious setting, you might consider avoiding regexes in general, or even dropping down and calling browser APIs to use the built-in regex engine instead. (This is what `leptos_router` does on the few occasions it needs a regular expression.)
 
 In general, Rust’s commitment to runtime performance is sometimes at odds with a commitment to a small binary. For example, Rust monomorphizes generic functions, meaning it creates a distinct copy of the function for each generic type it’s called with. This is significantly faster than dynamic dispatch, but increases binary size. Leptos tries to balance runtime performance with binary size considerations pretty carefully; but you might find that writing code that uses many generics tends to increase binary size. For example, if you have a generic component with a lot of code in its body and call it with four different types, remember that the compiler could include four copies of that same code. Refactoring to use a concrete inner function or helper can often maintain performance and ergonomics while reducing binary size.
 
 ## A Final Thought
 
-Remember that in a server-rendered app, JS bundle size/WASM binary size affects only _one_ thing: time to interactivity on the first load. This is very important to a good user experience—nobody wants to click a button three times and have it do nothing because the interactive code is still loading—but it is not the only important measure.
+Remember that in a server-rendered app, JS bundle size/WASM binary size affects only _one_ thing: time to interactivity on the first load. This is very important to a good user experience: nobody wants to click a button three times and have it do nothing because the interactive code is still loading — but it's not the only important measure.
 
 It’s especially worth remembering that streaming in a single WASM binary means all subsequent navigations are nearly instantaneous, depending only on any additional data loading. Precisely because your WASM binary is _not_ bundle split, navigating to a new route does not require loading additional JS/WASM, as it does in nearly every JavaScript framework. Is this copium? Maybe. Or maybe it’s just an honest trade-off between the two approaches!
 

docs/book/src/interlude_projecting_children.md

@@ -7,12 +7,12 @@ As you build components you may occasionally find yourself wanting to “project
 Consider the following:
 
 ```rust
-pub fn LoggedIn<F, IV>(cx: Scope, fallback: F, children: ChildrenFn) -> impl IntoView
+pub fn LoggedIn<F, IV>(fallback: F, children: ChildrenFn) -> impl IntoView
 where
-    F: Fn(Scope) -> IV + 'static,
+    F: Fn() -> IV + 'static,
     IV: IntoView,
 {
-    view! { cx,
+    view! {
         <Suspense
             fallback=|| ()
         >
@@ -22,16 +22,16 @@ where
                 when=move || todo!()
                 fallback=fallback
             >
-				{children(cx)}
+				{children()}
 			</Show>
         </Suspense>
     }
 }
 ```
 
-This is pretty straightforward: when the user is logged in, we want to show `children`. Until if the user is not logged in, we want to show `fallback`. And while we’re waiting to find out, we just render `()`, i.e., nothing.
+This is pretty straightforward: when the user is logged in, we want to show `children`. If the user is not logged in, we want to show `fallback`. And while we’re waiting to find out, we just render `()`, i.e., nothing.
 
-In other words, we want to pass the children of `<WhenLoaded/>` _through_ the `<Suspense/>` component to become the children of the `<Show/>`. This is what I mean by “projection.”
+In other words, we want to pass the children of `<LoggedIn/>` _through_ the `<Suspense/>` component to become the children of the `<Show/>`. This is what I mean by “projection.”
 
 This won’t compile.
 
@@ -50,18 +50,16 @@ If you want to really understand the issue here, it may help to look at the expa
 
 ```rust
 Suspense(
-    cx,
     ::leptos::component_props_builder(&Suspense)
         .fallback(|| ())
         .children({
             // fallback and children are moved into this closure
-            Box::new(move |cx| {
+            Box::new(move || {
                 {
                     // fallback and children captured here
                     leptos::Fragment::lazy(|| {
                         vec![
                             (Show(
-                                cx,
                                 ::leptos::component_props_builder(&Show)
                                     .when(|| true)
 									// but fallback is moved into Show here
@@ -70,7 +68,7 @@ Suspense(
                                     .children(children)
                                     .build(),
                             )
-                            .into_view(cx)),
+                            .into_view()),
                         ]
                     })
                 }
@@ -91,22 +89,22 @@ We can solve this problem by using the [`store_value`](https://docs.rs/leptos/la
 In this case, it’s really simple:
 
 ```rust
-pub fn LoggedIn<F, IV>(cx: Scope, fallback: F, children: ChildrenFn) -> impl IntoView
+pub fn LoggedIn<F, IV>(fallback: F, children: ChildrenFn) -> impl IntoView
 where
-    F: Fn(Scope) -> IV + 'static,
+    F: Fn() -> IV + 'static,
     IV: IntoView,
 {
-    let fallback = store_value(cx, fallback);
-    let children = store_value(cx, children);
-    view! { cx,
+    let fallback = store_value(fallback);
+    let children = store_value(children);
+    view! {
         <Suspense
             fallback=|| ()
         >
             <Show
                 when=|| todo!()
-                fallback=move |cx| fallback.with_value(|fallback| fallback(cx))
+                fallback=move || fallback.with_value(|fallback| fallback())
             >
-                {children.with_value(|children| children(cx))}
+                {children.with_value(|children| children())}
             </Show>
         </Suspense>
     }
@@ -125,9 +123,9 @@ Consider this example
 
 ```rust
 #[component]
-pub fn App(cx: Scope) -> impl IntoView {
+pub fn App() -> impl IntoView {
     let name = "Alice".to_string();
-    view! { cx,
+    view! {
         <Outer>
             <Inner>
                 <Inmost name=name.clone()/>
@@ -137,18 +135,18 @@ pub fn App(cx: Scope) -> impl IntoView {
 }
 
 #[component]
-pub fn Outer(cx: Scope, children: ChildrenFn) -> impl IntoView {
-    children(cx)
+pub fn Outer(ChildrenFn) -> impl IntoView {
+    children()
 }
 
 #[component]
-pub fn Inner(cx: Scope, children: ChildrenFn) -> impl IntoView {
-    children(cx)
+pub fn Inner(ChildrenFn) -> impl IntoView {
+    children()
 }
 
 #[component]
-pub fn Inmost(cx: Scope, name: String) -> impl IntoView {
-    view! { cx,
+pub fn Inmost(ng) -> impl IntoView {
+    view! {
         <p>{name}</p>
     }
 }
@@ -165,7 +163,7 @@ It’s captured through multiple levels of children that need to run more than o
 In this case, the `clone:` syntax comes in handy. Calling `clone:name` will clone `name` _before_ moving it into `<Inner/>`’s children, which solves our ownership issue.
 
 ```rust
-view! { cx,
+view! {
 	<Outer>
 		<Inner clone:name>
 			<Inmost name=name.clone()/>

docs/book/src/interlude_styling.md

@@ -14,10 +14,10 @@ This allows you to write components like this:
 
 ```rust
 #[component]
-fn Home(cx: Scope) -> impl IntoView {
-    let (count, set_count) = create_signal(cx, 0);
+fn Home() -> impl IntoView {
+    let (count, set_count) = create_signal(0);
 
-    view! { cx,
+    view! {
         <main class="my-0 mx-auto max-w-3xl text-center">
             <h2 class="p-6 text-4xl">"Welcome to Leptos with Tailwind"</h2>
             <p class="px-10 pb-10 text-left">"Tailwind will scan your Rust files for Tailwind class names and compile them into a CSS file."</p>
@@ -36,7 +36,7 @@ fn Home(cx: Scope) -> impl IntoView {
 }
 ```
 
-It can be a little complicated to set up the Tailwind integration at first, but you can check out our two examples of how to use Tailwind with a [client-side-rendered `trunk` application](https://github.com/leptos-rs/leptos/tree/main/examples/tailwind_csr_trunk) or with a [server-rendered `cargo-leptos` application](https://github.com/leptos-rs/leptos/tree/main/examples/tailwind). `cargo-leptos` also has some [built-in Tailwind support](https://github.com/leptos-rs/cargo-leptos#site-parameters) that you can use as an alternative to Tailwind’s CLI.
+It can be a little complicated to set up the Tailwind integration at first, but you can check out our two examples of how to use Tailwind with a [client-side-rendered `trunk` application](https://github.com/leptos-rs/leptos/tree/main/examples/tailwind_csr) or with a [server-rendered `cargo-leptos` application](https://github.com/leptos-rs/leptos/tree/main/examples/tailwind_actix). `cargo-leptos` also has some [built-in Tailwind support](https://github.com/leptos-rs/cargo-leptos#site-parameters) that you can use as an alternative to Tailwind’s CLI.
 
 ## Stylers: Compile-time CSS Extraction
 
@@ -48,9 +48,9 @@ This allows you to write components like this:
 use stylers::style;
 
 #[component]
-pub fn App(cx: Scope) -> impl IntoView {
+pub fn App() -> impl IntoView {
     let styler_class = style! { "App",
-        #two{
+        ##two{
             color: blue;
         }
         div.one{
@@ -74,7 +74,7 @@ pub fn App(cx: Scope) -> impl IntoView {
         }
     };
 
-    view! { cx, class = styler_class,
+    view! { class = styler_class,
         <div class="one">
             <h1 id="two">"Hello"</h1>
             <h2>"World"</h2>
@@ -93,7 +93,7 @@ pub fn App(cx: Scope) -> impl IntoView {
 use styled::style;
 
 #[component]
-pub fn MyComponent(cx: Scope) -> impl IntoView {
+pub fn MyComponent() -> impl IntoView {
     let styles = style!(
       div {
         background-color: red;
@@ -101,7 +101,7 @@ pub fn MyComponent(cx: Scope) -> impl IntoView {
       }
     );
 
-    styled::view! { cx, styles,
+    styled::view! { styles,
         <div>"This text should be red with white text."</div>
     }
 }

docs/book/src/islands.md

@@ -0,0 +1,489 @@
+# Guide: Islands
+
+Leptos 0.5 introduces the new `experimental-islands` feature. This guide will walk through the islands feature and core concepts, while implementing a demo app using the islands architecture.
+
+## The Islands Architecture
+
+The dominant JavaScript frontend frameworks (React, Vue, Svelte, Solid, Angular) all originated as frameworks for building client-rendered single-page apps (SPAs). The initial page load is rendered to HTML, then hydrated, and subsequent navigations are handled directly in the client. (Hence “single page”: everything happens from a single page load from the server, even if there is client-side routing later.) Each of these frameworks later added server-side rendering to improve initial load times, SEO, and user experience.
+
+This means that by default, the entire app is interactive. It also means that the entire app has to be shipped to the client as JavaScript in order to be hydrated. Leptos has followed this same pattern.
+
+> You can read more in the chapters on [server-side rendering](./ssr/22_life_cycle.md).
+
+But it’s also possible to work in the opposite direction. Rather than taking an entirely-interactive app, rendering it to HTML on the server, and then hydrating it in the browser, you can begin with a plain HTML page and add small areas of interactivity. This is the traditional format for any website or app before the 2010s: your browser makes a series of requests to the server and returns the HTML for each new page in response. After the rise of “single-page apps” (SPA), this approach has sometimes become known as a “multi-page app” (MPA) by comparison.
+
+The phrase “islands architecture” has emerged recently to describe the approach of beginning with a “sea” of server-rendered HTML pages, and adding “islands” of interactivity throughout the page.
+
+> ### Additional Reading
+>
+> The rest of this guide will look at how to use islands with Leptos. For more background on the approach in general, check out some of the articles below:
+>
+> - Jason Miller, [“Islands Architecture”](https://jasonformat.com/islands-architecture/), Jason Miller
+> - Ryan Carniato, [“Islands & Server Components & Resumability, Oh My!”](https://dev.to/this-is-learning/islands-server-components-resumability-oh-my-319d)
+> - [“Islands Architectures”](https://www.patterns.dev/posts/islands-architecture) on patterns.dev
+> - [Astro Islands](https://docs.astro.build/en/concepts/islands/)
+
+## Activating Islands Mode
+
+Let’s start with a fresh `cargo-leptos` app:
+
+```bash
+cargo leptos new --git leptos-rs/start
+```
+
+> I’m using Actix because I like it. Feel free to use Axum; there should be approximately no server-specific differences in this guide.
+
+I’m just going to run
+
+```bash
+cargo leptos build
+```
+
+in the background while I fire up my editor and keep writing.
+
+The first thing I’ll do is to add the `experimental-islands` feature in my `Cargo.toml`. I need to add this to both `leptos` and `leptos_actix`:
+
+```toml
+leptos = { version = "0.5", features = ["nightly", "experimental-islands"] }
+leptos_actix = { version = "0.5", optional = true, features = [
+  "experimental-islands",
+] }
+```
+
+Next I’m going to modify the `hydrate` function exported from `src/lib.rs`. I’m going to remove the line that calls `leptos::mount_to_body(App)` and replace it with
+
+```rust
+leptos::leptos_dom::HydrationCtx::stop_hydrating();
+```
+
+Each “island” we create will actually act as its own entrypoint, so our `hydrate()` function just says “okay, hydration’s done now.”
+
+Okay, now fire up your `cargo leptos watch` and go to [`http://localhost:3000`](http://localhost:3000) (or wherever).
+
+Click the button, and...
+
+Nothing happens!
+
+Perfect.
+
+## Using Islands
+
+Nothing happens because we’ve just totally inverted the mental model of our app. Rather than being interactive by default and hydrating everything, the app is now plain HTML by default, and we need to opt into interactivity.
+
+This has a big effect on WASM binary sizes: if I compile in release mode, this app is a measly 24kb of WASM (uncompressed), compared to 355kb in non-islands mode. (355kb is quite large for a “Hello, world!” It’s really just all the code related to client-side routing, which isn’t being used in the demo.)
+
+When we click the button, nothing happens, because our whole page is static.
+
+So how do we make something happen?
+
+Let’s turn the `HomePage` component into an island!
+
+Here was the non-interactive version:
+
+```rust
+#[component]
+fn HomePage() -> impl IntoView {
+    // Creates a reactive value to update the button
+    let (count, set_count) = create_signal(0);
+    let on_click = move |_| set_count.update(|count| *count += 1);
+
+    view! {
+        <h1>"Welcome to Leptos!"</h1>
+        <button on:click=on_click>"Click Me: " {count}</button>
+    }
+}
+```
+
+Here’s the interactive version:
+
+```rust
+#[island]
+fn HomePage() -> impl IntoView {
+    // Creates a reactive value to update the button
+    let (count, set_count) = create_signal(0);
+    let on_click = move |_| set_count.update(|count| *count += 1);
+
+    view! {
+        <h1>"Welcome to Leptos!"</h1>
+        <button on:click=on_click>"Click Me: " {count}</button>
+    }
+}
+```
+
+Now when I click the button, it works!
+
+The `#[island]` macro works exactly like the `#[component]` macro, except that in islands mode, it designates this as an interactive island. If we check the binary size again, this is 166kb uncompressed in release mode; much larger than the 24kb totally static version, but much smaller than the 355kb fully-hydrated version.
+
+If you open up the source for the page now, you’ll see that your `HomePage` island has been rendered as a special `<leptos-island>` HTML element which specifies which component should be used to hydrate it:
+
+```html
+<leptos-island data-component="HomePage" data-hkc="0-0-0">
+  <h1 data-hk="0-0-2">Welcome to Leptos!</h1>
+  <button data-hk="0-0-3">
+    Click Me:
+    <!-- <DynChild> -->11<!-- </DynChild> -->
+  </button>
+</leptos-island>
+```
+
+The typical Leptos hydration keys and markers are only present inside the island, only the island is hydrated.
+
+## Using Islands Effectively
+
+Remember that _only_ code within an `#[island]` needs to be compiled to WASM and shipped to the browser. This means that islands should be as small and specific as possible. My `HomePage`, for example, would be better broken apart into a regular component and an island:
+
+```rust
+#[component]
+fn HomePage() -> impl IntoView {
+    view! {
+        <h1>"Welcome to Leptos!"</h1>
+        <Counter/>
+    }
+}
+
+#[island]
+fn Counter() -> impl IntoView {
+    // Creates a reactive value to update the button
+    let (count, set_count) = create_signal(0);
+    let on_click = move |_| set_count.update(|count| *count += 1);
+
+    view! {
+        <button on:click=on_click>"Click Me: " {count}</button>
+    }
+}
+```
+
+Now the `<h1>` doesn’t need to be included in the client bundle, or hydrated. This seems like a silly distinction now; but note that you can now add as much inert HTML content as you want to the `HomePage` itself, and the WASM binary size will remain exactly the same.
+
+In regular hydration mode, your WASM binary size grows as a function of the size/complexity of your app. In islands mode, your WASM binary grows as a function of the amount of interactivity in your app. You can add as much non-interactive content as you want, outside islands, and it will not increase that binary size.
+
+## Unlocking Superpowers
+
+So, this 50% reduction in WASM binary size is nice. But really, what’s the point?
+
+The point comes when you combine two key facts:
+
+1. Code inside `#[component]` functions now _only_ runs on the server.
+2. Children and props can be passed from the server to islands, without being included in the WASM binary.
+
+This means you can run server-only code directly in the body of a component, and pass it directly into the children. Certain tasks that take a complex blend of server functions and Suspense in fully-hydrated apps can be done inline in islands.
+
+We’re going to rely on a third fact in the rest of this demo:
+
+3. Context can be passed between otherwise-independent islands.
+
+So, instead of our counter demo, let’s make something a little more fun: a tabbed interface that reads data from files on the server.
+
+## Passing Server Children to Islands
+
+One of the most powerful things about islands is that you can pass server-rendered children into an island, without the island needing to know anything about them. Islands hydrate their own content, but not children that are passed to them.
+
+As Dan Abramov of React put it (in the very similar context of RSCs), islands aren’t really islands: they’re donuts. You can pass server-only content directly into the “donut hole,” as it were, allowing you to create tiny atolls of interactivity, surrounded on _both_ sides by the sea of inert server HTML.
+
+> In the demo code included below, I added some styles to show all server content as a light-blue “sea,” and all islands as light-green “land.” Hopefully that will help picture what I’m talking about!
+
+To continue with the demo: I’m going to create a `Tabs` component. Switching between tabs will require some interactivity, so of course this will be an island. Let’s start simple for now:
+
+```rust
+#[island]
+fn Tabs(labels: Vec<String>) -> impl IntoView {
+    let buttons = labels
+        .into_iter()
+        .map(|label| view! { <button>{label}</button> })
+        .collect_view();
+    view! {
+        <div style="display: flex; width: 100%; justify-content: space-between;">
+            {buttons}
+        </div>
+    }
+}
+```
+
+Oops. This gives me an error
+
+```
+error[E0463]: can't find crate for `serde`
+  --> src/app.rs:43:1
+   |
+43 | #[island]
+   | ^^^^^^^^^ can't find crate
+```
+
+Easy fix: let’s `cargo add serde --features=derive`. The `#[island]` macro wants to pull in `serde` here because it needs to serialize and deserialize the `labels` prop.
+
+Now let’s update the `HomePage` to use `Tabs`.
+
+```rust
+#[component]
+fn HomePage() -> impl IntoView {
+	// these are the files we’re going to read
+    let files = ["a.txt", "b.txt", "c.txt"];
+	// the tab labels will just be the file names
+	let labels = files.iter().copied().map(Into::into).collect();
+    view! {
+        <h1>"Welcome to Leptos!"</h1>
+        <p>"Click any of the tabs below to read a recipe."</p>
+        <Tabs labels/>
+    }
+}
+```
+
+If you take a look in the DOM inspector, you’ll see the island is now something like
+
+```html
+<leptos-island
+  data-component="Tabs"
+  data-hkc="0-0-0"
+  data-props='{"labels":["a.txt","b.txt","c.txt"]}'
+></leptos-island>
+```
+
+Our `labels` prop is getting serialized to JSON and stored in an HTML attribute so it can be used to hydrate the island.
+
+Now let’s add some tabs. For the moment, a `Tab` island will be really simple:
+
+```rust
+#[island]
+fn Tab(index: usize, children: Children) -> impl IntoView {
+    view! {
+        <div>{children()}</div>
+    }
+}
+```
+
+Each tab, for now will just be a `<div>` wrapping its children.
+
+Our `Tabs` component will also get some children: for now, let’s just show them all.
+
+```rust
+#[island]
+fn Tabs(labels: Vec<String>, children: Children) -> impl IntoView {
+    let buttons = labels
+        .into_iter()
+        .map(|label| view! { <button>{label}</button> })
+        .collect_view();
+    view! {
+        <div style="display: flex; width: 100%; justify-content: space-around;">
+            {buttons}
+        </div>
+        {children()}
+    }
+}
+```
+
+Okay, now let’s go back into the `HomePage`. We’re going to create the list of tabs to put into our tab box.
+
+```rust
+#[component]
+fn HomePage() -> impl IntoView {
+    let files = ["a.txt", "b.txt", "c.txt"];
+    let labels = files.iter().copied().map(Into::into).collect();
+	let tabs = move || {
+        files
+            .into_iter()
+            .enumerate()
+            .map(|(index, filename)| {
+                let content = std::fs::read_to_string(filename).unwrap();
+                view! {
+                    <Tab index>
+                        <h2>{filename.to_string()}</h2>
+                        <p>{content}</p>
+                    </Tab>
+                }
+            })
+            .collect_view()
+    };
+
+    view! {
+        <h1>"Welcome to Leptos!"</h1>
+        <p>"Click any of the tabs below to read a recipe."</p>
+        <Tabs labels>
+            <div>{tabs()}</div>
+        </Tabs>
+    }
+}
+```
+
+Uh... What?
+
+If you’re used to using Leptos, you know that you just can’t do this. All code in the body of components has to run on the server (to be rendered to HTML) and in the browser (to hydrate), so you can’t just call `std::fs`; it will panic, because there’s no access to the local filesystem (and certainly not to the server filesystem!) in the browser. This would be a security nightmare!
+
+Except... wait. We’re in islands mode. This `HomePage` component _really does_ only run on the server. So we can, in fact, just use ordinary server code like this.
+
+> **Is this a dumb example?** Yes! Synchronously reading from three different local files in a `.map()` is not a good choice in real life. The point here is just to demonstrate that this is, definitely, server-only content.
+
+Go ahead and create three files in the root of the project called `a.txt`, `b.txt`, and `c.txt`, and fill them in with whatever content you’d like.
+
+Refresh the page and you should see the content in the browser. Edit the files and refresh again; it will be updated.
+
+You can pass server-only content from a `#[component]` into the children of an `#[island]`, without the island needing to know anything about how to access that data or render that content.
+
+**This is really important.** Passing server `children` to islands means that you can keep islands small. Ideally, you don’t want to slap and `#[island]` around a whole chunk of your page. You want to break that chunk out into an interactive piece, which can be an `#[island]`, and a bunch of additional server content that can be passed to that island as `children`, so that the non-interactive subsections of an interactive part of the page can be kept out of the WASM binary.
+
+## Passing Context Between Islands
+
+These aren’t really “tabs” yet: they just show every tab, all the time. So let’s add some simple logic to our `Tabs` and `Tab` components.
+
+We’ll modify `Tabs` to create a simple `selected` signal. We provide the read half via context, and set the value of the signal whenever someone clicks one of our buttons.
+
+```rust
+#[island]
+fn Tabs(labels: Vec<String>, children: Children) -> impl IntoView {
+    let (selected, set_selected) = create_signal(0);
+    provide_context(selected);
+
+    let buttons = labels
+        .into_iter()
+        .enumerate()
+        .map(|(index, label)| view! {
+            <button on:click=move |_| set_selected(index)>
+                {label}
+            </button>
+        })
+        .collect_view();
+// ...
+```
+
+And let’s modify the `Tab` island to use that context to show or hide itself:
+
+```rust
+#[island]
+fn Tab(children: Children) -> impl IntoView {
+    let selected = expect_context::<ReadSignal<usize>>();
+    view! {
+        <div style:display=move || if selected() {
+            "block"
+        } else {
+            "none"
+        }>
+// ...
+```
+
+Now the tabs behave exactly as I’d expect. `Tabs` passes the signal via context to each `Tab`, which uses it to determine whether it should be open or not.
+
+> That’s why in `HomePage`, I made `let tabs = move ||` a function, and called it like `{tabs()}`: creating the tabs lazily this way meant that the `Tabs` island would already have provided the `selected` context by the time each `Tab` went looking for it.
+
+Our complete tabs demo is about 220kb uncompressed: not the smallest demo in the world, but still about a third smaller than the counter button! Just for kicks, I built the same demo without islands mode, using `#[server]` functions and `Suspense`. and it was 429kb. So again, this was about a 50% savings in binary size. And this app includes quite minimal server-only content: remember that as we add additional server-only components and pages, this 220 will not grow.
+
+## Overview
+
+This demo may seem pretty basic. It is. But there are a number of immediate takeaways:
+
+- **50% WASM binary size reduction**, which means measurable improvements in time to interactivity and initial load times for clients.
+- **Reduced HTML page size.** This one is less obvious, but it’s true and important: HTML generated from `#[component]`s doesn’t need all the hydration IDs and other boilerplate added.
+- **Reduced data serialization costs.** Creating a resource and reading it on the client means you need to serialize the data, so it can be used for hydration. If you’ve also read that data to create HTML in a `Suspense`, you end up with “double data,” i.e., the same exact data is both rendered to HTML and serialized as JSON, increasing the size of responses, and therefore slowing them down.
+- **Easily use server-only APIs** inside a `#[component]` as if it were a normal, native Rust function running on the server—which, in islands mode, it is!
+- **Reduced `#[server]`/`create_resource`/`Suspense` boilerplate** for loading server data.
+
+## Future Exploration
+
+The `experimental-islands` feature included in 0.5 reflects work at the cutting edge of what frontend web frameworks are exploring right now. As it stands, our islands approach is very similar to Astro (before its recent View Transitions support): it allows you to build a traditional server-rendered, multi-page app and pretty seamlessly integrate islands of interactivity.
+
+There are some small improvements that will be easy to add. For example, we can do something very much like Astro's View Transitions approach:
+
+- add client-side routing for islands apps by fetching subsequent navigations from the server and replacing the HTML document with the new one
+- add animated transitions between the old and new document using the View Transitions API
+- support explicit persistent islands, i.e., islands that you can mark with unique IDs (something like `persist:searchbar` on the component in the view), which can be copied over from the old to the new document without losing their current state
+
+There are other, larger architectural changes that I’m [not sold on yet](https://github.com/leptos-rs/leptos/issues/1830).
+
+## Additional Information
+
+Check out the [islands PR](https://github.com/leptos-rs/leptos/pull/1660), [roadmap](https://github.com/leptos-rs/leptos/issues/1830), and [Hackernews demo](https://github.com/leptos-rs/leptos/tree/main/examples/hackernews_islands_axum) for additional discussion.
+
+## Demo Code
+
+```rust
+use leptos::*;
+use leptos_router::*;
+
+#[component]
+pub fn App() -> impl IntoView {
+    view! {
+        <Router>
+            <main style="background-color: lightblue; padding: 10px">
+                <Routes>
+                    <Route path="" view=HomePage/>
+                </Routes>
+            </main>
+        </Router>
+    }
+}
+
+/// Renders the home page of your application.
+#[component]
+fn HomePage() -> impl IntoView {
+    let files = ["a.txt", "b.txt", "c.txt"];
+    let labels = files.iter().copied().map(Into::into).collect();
+    let tabs = move || {
+        files
+            .into_iter()
+            .enumerate()
+            .map(|(index, filename)| {
+                let content = std::fs::read_to_string(filename).unwrap();
+                view! {
+                    <Tab index>
+                        <div style="background-color: lightblue; padding: 10px">
+                            <h2>{filename.to_string()}</h2>
+                            <p>{content}</p>
+                        </div>
+                    </Tab>
+                }
+            })
+            .collect_view()
+    };
+
+    view! {
+        <h1>"Welcome to Leptos!"</h1>
+        <p>"Click any of the tabs below to read a recipe."</p>
+        <Tabs labels>
+            <div>{tabs()}</div>
+        </Tabs>
+    }
+}
+
+#[island]
+fn Tabs(labels: Vec<String>, children: Children) -> impl IntoView {
+    let (selected, set_selected) = create_signal(0);
+    provide_context(selected);
+
+    let buttons = labels
+        .into_iter()
+        .enumerate()
+        .map(|(index, label)| {
+            view! {
+                <button on:click=move |_| set_selected(index)>
+                    {label}
+                </button>
+            }
+        })
+        .collect_view();
+    view! {
+        <div
+            style="display: flex; width: 100%; justify-content: space-around;\
+            background-color: lightgreen; padding: 10px;"
+        >
+            {buttons}
+        </div>
+        {children()}
+    }
+}
+
+#[island]
+fn Tab(index: usize, children: Children) -> impl IntoView {
+    let selected = expect_context::<ReadSignal<usize>>();
+    view! {
+        <div
+            style:background-color="lightgreen"
+            style:padding="10px"
+            style:display=move || if selected() == index {
+                "block"
+            } else {
+                "none"
+            }
+        >
+            {children()}
+        </div>
+    }
+}
+```

docs/book/src/metadata.md

@@ -24,19 +24,19 @@ That’s where the [`leptos_meta`](https://docs.rs/leptos_meta/latest/leptos_met
 
 `leptos_meta` also provides a [`<Script/>`](https://docs.rs/leptos_meta/latest/leptos_meta/fn.Script.html) component, and it’s worth pausing here for a second. All of the other components we’ve considered inject `<head>`-only elements in the `<head>`. But a `<script>` can also be included in the body.
 
-There’s a very simple way to determine whether you should use a capital-S `<Script/>` component or a lowercase-s `<script>` element: the `<Script/>` component will be rendered in the `<head>`, and the `<script>` element will be rendered wherever in your the `<body>` of your user interface you put in, alongside other normal HTML elements. These cause JavaScript to load and run at different times, so use whichever is appropriate to your needs.
+There’s a very simple way to determine whether you should use a capital-S `<Script/>` component or a lowercase-s `<script>` element: the `<Script/>` component will be rendered in the `<head>`, and the `<script>` element will be rendered wherever in the `<body>` of your user interface you put it in, alongside other normal HTML elements. These cause JavaScript to load and run at different times, so use whichever is appropriate to your needs.
 
 ## `<Body/>` and `<Html/>`
 
-There are even a couple elements designed to make semantic HTML and styling easier. [`<Html/>`](https://docs.rs/leptos_meta/latest/leptos_meta/fn.Html.html) lets you set the `lang` and `dir` on your `<html>` tag from your application code. `<Html/>` and [`<Body/>`](https://docs.rs/leptos_meta/latest/leptos_meta/fn.Html.html) both have `class` props that let you set their respective `class` attributes, which is sometimes needed by CSS frameworks for styling.
+There are even a couple elements designed to make semantic HTML and styling easier. [`<Html/>`](https://docs.rs/leptos_meta/latest/leptos_meta/fn.Html.html) lets you set the `lang` and `dir` on your `<html>` tag from your application code. `<Html/>` and [`<Body/>`](https://docs.rs/leptos_meta/latest/leptos_meta/fn.Body.html) both have `class` props that let you set their respective `class` attributes, which is sometimes needed by CSS frameworks for styling.
 
-`<Body/>` and `<Html/>` both also have `attributes` props which can be used to set any number of additional attributes on them via the [`AdditionalAttributes`](https://docs.rs/leptos/latest/leptos/struct.AdditionalAttributes.html) type:
+`<Body/>` and `<Html/>` both also have `attributes` props which can be used to set any number of additional attributes on them via the `attr:` syntax:
 
 ```rust
 <Html
 	lang="he"
 	dir="rtl"
-	attributes=AdditionalAttributes::from(vec![("data-theme", "dark")])
+	attr:data-theme="dark"
 />
 ```
 

docs/book/src/progressive_enhancement/action_form.md

@@ -3,12 +3,13 @@
 [`<ActionForm/>`](https://docs.rs/leptos_router/latest/leptos_router/fn.ActionForm.html) is a specialized `<Form/>` that takes a server action, and automatically dispatches it on form submission. This allows you to call a server function directly from a `<form>`, even without JS/WASM.
 
 The process is simple:
+
 1. Define a server function using the [`#[server]` macro](https://docs.rs/leptos/latest/leptos/attr.server.html) (see [Server Functions](../server/25_server_functions.md).)
 2. Create an action using [`create_server_action`](https://docs.rs/leptos/latest/leptos/fn.create_server_action.html), specifying the type of the server function you’ve defined.
 3. Create an `<ActionForm/>`, providing the server action in the `action` prop.
 4. Pass the named arguments to the server function as form fields with the same names.
 
-> **Note:** `<ActionForm/>` only works with the default URL-encoded `POST` encoding for server functions, to ensure graceful degradation/correct behavior as an HTML form. 
+> **Note:** `<ActionForm/>` only works with the default URL-encoded `POST` encoding for server functions, to ensure graceful degradation/correct behavior as an HTML form.
 
 ```rust
 #[server(AddTodo, "/api")]
@@ -17,14 +18,14 @@ pub async fn add_todo(title: String) -> Result<(), ServerFnError> {
 }
 
 #[component]
-fn AddTodo(cx: Scope) -> impl IntoView {
-	let add_todo = create_server_action::<AddTodo>(cx);
+fn AddTodo() -> impl IntoView {
+	let add_todo = create_server_action::<AddTodo>();
 	// holds the latest *returned* value from the server
 	let value = add_todo.value();
 	// check if the server has returned an error
 	let has_error = move || value.with(|val| matches!(val, Some(Err(_))));
 
-	view! { cx,
+	view! {
 		<ActionForm action=add_todo>
 			<label>
 				"Add a Todo"
@@ -36,6 +37,7 @@ fn AddTodo(cx: Scope) -> impl IntoView {
 	}
 }
 ```
+
 It’s really that easy. With JS/WASM, your form will submit without a page reload, storing its most recent submission in the `.input()` signal of the action, its pending status in `.pending()`, and so on. (See the [`Action`](https://docs.rs/leptos/latest/leptos/struct.Action.html) docs for a refresher, if you need.) Without JS/WASM, your form will submit with a page reload. If you call a `redirect` function (from `leptos_axum` or `leptos_actix`) it will redirect to the correct page. By default, it will redirect back to the page you’re currently on. The power of HTML, HTTP, and isomorphic rendering mean that your `<ActionForm/>` simply works, even with no JS/WASM.
 
 ## Client-Side Validation
@@ -53,4 +55,46 @@ let on_submit = move |ev| {
 		ev.prevent_default();
 	}
 }
-```
+```
+
+## Complex Inputs
+
+Server function arguments that are structs with nested serializable fields should make use of indexing notation of `serde_qs`.
+
+```rust
+use leptos::*;
+use leptos_router::*;
+
+#[derive(serde::Serialize, serde::Deserialize, Debug, Clone)]
+struct HeftyData {
+    first_name: String,
+    last_name: String,
+}
+
+#[component]
+fn ComplexInput() -> impl IntoView {
+    let submit = Action::<VeryImportantFn, _>::server();
+
+    view! {
+      <ActionForm action=submit>
+        <input type="text" name="hefty_arg[first_name]" value="leptos"/>
+        <input
+          type="text"
+          name="hefty_arg[last_name]"
+          value="closures-everywhere"
+        />
+        <input type="submit"/>
+      </ActionForm>
+    }
+}
+
+#[server]
+async fn very_important_fn(
+    hefty_arg: HeftyData,
+) -> Result<(), ServerFnError> {
+    assert_eq!(hefty_arg.first_name.as_str(), "leptos");
+    assert_eq!(hefty_arg.last_name.as_str(), "closures-everywhere");
+    Ok(())
+}
+
+```

docs/book/src/reactivity/14_create_effect.md

@@ -9,10 +9,10 @@ Hidden behind the whole reactive DOM renderer that we’ve seen so far is a func
 [`create_effect`](https://docs.rs/leptos_reactive/latest/leptos_reactive/fn.create_effect.html) takes a function as its argument. It immediately runs the function. If you access any reactive signal inside that function, it registers the fact that the effect depends on that signal with the reactive runtime. Whenever one of the signals that the effect depends on changes, the effect runs again.
 
 ```rust
-let (a, set_a) = create_signal(cx, 0);
-let (b, set_b) = create_signal(cx, 0);
+let (a, set_a) = create_signal(0);
+let (b, set_b) = create_signal(0);
 
-create_effect(cx, move |_| {
+create_effect(move |_| {
   // immediately prints "Value: 0" and subscribes to `a`
   log::debug!("Value: {}", a());
 });
@@ -42,15 +42,14 @@ While they’re not a “zero-cost abstraction” in the most technical sense—
 Imagine that I’m creating some kind of chat software, and I want people to be able to display their full name, or just their first name, and to notify the server whenever their name changes:
 
 ```rust
-let (first, set_first) = create_signal(cx, String::new());
-let (last, set_last) = create_signal(cx, String::new());
-let (use_last, set_use_last) = create_signal(cx, true);
+let (first, set_first) = create_signal(String::new());
+let (last, set_last) = create_signal(String::new());
+let (use_last, set_use_last) = create_signal(true);
 
 // this will add the name to the log
 // any time one of the source signals changes
-create_effect(cx, move |_| {
+create_effect(move |_| {
     log(
-        cx,
         if use_last() {
             format!("{} {}", first(), last())
         } else {
@@ -77,9 +76,9 @@ If you need to synchronize some reactive value with the non-reactive world outsi
 We’ve managed to get this far without mentioning effects because they’re built into the Leptos DOM renderer. We’ve seen that you can create a signal and pass it into the `view` macro, and it will update the relevant DOM node whenever the signal changes:
 
 ```rust
-let (count, set_count) = create_signal(cx, 0);
+let (count, set_count) = create_signal(0);
 
-view! { cx,
+view! {
     <p>{count}</p>
 }
 ```
@@ -87,13 +86,13 @@ view! { cx,
 This works because the framework essentially creates an effect wrapping this update. You can imagine Leptos translating this view into something like this:
 
 ```rust
-let (count, set_count) = create_signal(cx, 0);
+let (count, set_count) = create_signal(0);
 
 // create a DOM element
 let p = create_element("p");
 
 // create an effect to reactively update the text
-create_effect(cx, move |prev_value| {
+create_effect(move |prev_value| {
     // first, access the signal’s value and convert it to a string
     let text = count().to_string();
 
@@ -109,6 +108,222 @@ create_effect(cx, move |prev_value| {
 
 Every time `count` is updated, this effect wil rerun. This is what allows reactive, fine-grained updates to the DOM.
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/serene-thompson-40974n?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A2%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A2%7D%5D)
+## Explicit, Cancelable Tracking with `watch`
 
-<iframe src="https://codesandbox.io/p/sandbox/serene-thompson-40974n?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A2%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A2%7D%5D" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+In addition to `create_effect`, Leptos provides a [`watch`](https://docs.rs/leptos_reactive/latest/leptos_reactive/fn.watch.html) function, which can be used for two main purposes:
+
+1. Separating tracking and responding to changes by explicitly passing in a set of values to track.
+2. Canceling tracking by calling a stop function.
+
+Like `create_resource`, `watch` takes a first argument, which is reactively tracked, and a second, which is not. Whenever a reactive value in its `deps` argument is changed, the `callback` is run. `watch` returns a function that can be called to stop tracking the dependencies.
+
+```rust
+let (num, set_num) = create_signal(0);
+
+let stop = watch(
+    move || num.get(),
+    move |num, prev_num, _| {
+        log::debug!("Number: {}; Prev: {:?}", num, prev_num);
+    },
+    false,
+);
+
+set_num.set(1); // > "Number: 1; Prev: Some(0)"
+
+stop(); // stop watching
+
+set_num.set(2); // (nothing happens)
+```
+
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/14-effect-0-5-d6hkch?file=%2Fsrc%2Fmain.rs%3A1%2C1)
+
+<iframe src="https://codesandbox.io/p/sandbox/14-effect-0-5-d6hkch?file=%2Fsrc%2Fmain.rs%3A1%2C1" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use leptos::html::Input;
+use leptos::*;
+
+#[component]
+fn App() -> impl IntoView {
+    // Just making a visible log here
+    // You can ignore this...
+    let log = create_rw_signal::<Vec<String>>(vec![]);
+    let logged = move || log().join("\n");
+    provide_context(log);
+
+    view! {
+        <CreateAnEffect/>
+        <pre>{logged}</pre>
+    }
+}
+
+#[component]
+fn CreateAnEffect() -> impl IntoView {
+    let (first, set_first) = create_signal(String::new());
+    let (last, set_last) = create_signal(String::new());
+    let (use_last, set_use_last) = create_signal(true);
+
+    // this will add the name to the log
+    // any time one of the source signals changes
+    create_effect(move |_| {
+        log(
+
+            if use_last() {
+                format!("{}  {}", first(), last())
+            } else {
+                first()
+            },
+        )
+    });
+
+    view! {
+        <h1><code>"create_effect"</code> " Version"</h1>
+        <form>
+            <label>
+                "First Name"
+                <input type="text" name="first" prop:value=first
+                    on:change=move |ev| set_first(event_target_value(&ev))
+                />
+            </label>
+            <label>
+                "Last Name"
+                <input type="text" name="last" prop:value=last
+                    on:change=move |ev| set_last(event_target_value(&ev))
+                />
+            </label>
+            <label>
+                "Show Last Name"
+                <input type="checkbox" name="use_last" prop:checked=use_last
+                    on:change=move |ev| set_use_last(event_target_checked(&ev))
+                />
+            </label>
+        </form>
+    }
+}
+
+#[component]
+fn ManualVersion() -> impl IntoView {
+    let first = create_node_ref::<Input>();
+    let last = create_node_ref::<Input>();
+    let use_last = create_node_ref::<Input>();
+
+    let mut prev_name = String::new();
+    let on_change = move |_| {
+        log("      listener");
+        let first = first.get().unwrap();
+        let last = last.get().unwrap();
+        let use_last = use_last.get().unwrap();
+        let this_one = if use_last.checked() {
+            format!("{} {}", first.value(), last.value())
+        } else {
+            first.value()
+        };
+
+        if this_one != prev_name {
+            log(&this_one);
+            prev_name = this_one;
+        }
+    };
+
+    view! {
+        <h1>"Manual Version"</h1>
+        <form on:change=on_change>
+            <label>
+                "First Name"
+                <input type="text" name="first"
+                    node_ref=first
+                />
+            </label>
+            <label>
+                "Last Name"
+                <input type="text" name="last"
+                    node_ref=last
+                />
+            </label>
+            <label>
+                "Show Last Name"
+                <input type="checkbox" name="use_last"
+                    checked
+                    node_ref=use_last
+                />
+            </label>
+        </form>
+    }
+}
+
+#[component]
+fn EffectVsDerivedSignal() -> impl IntoView {
+    let (my_value, set_my_value) = create_signal(String::new());
+    // Don't do this.
+    /*let (my_optional_value, set_optional_my_value) = create_signal(Option::<String>::None);
+
+    create_effect(move |_| {
+        if !my_value.get().is_empty() {
+            set_optional_my_value(Some(my_value.get()));
+        } else {
+            set_optional_my_value(None);
+        }
+    });*/
+
+    // Do this
+    let my_optional_value =
+        move || (!my_value.with(String::is_empty)).then(|| Some(my_value.get()));
+
+    view! {
+        <input
+            prop:value=my_value
+            on:input= move |ev| set_my_value(event_target_value(&ev))
+        />
+
+        <p>
+            <code>"my_optional_value"</code>
+            " is "
+            <code>
+                <Show
+                    when=move || my_optional_value().is_some()
+                    fallback=|| view! { "None" }
+                >
+                    "Some(\"" {my_optional_value().unwrap()} "\")"
+                </Show>
+            </code>
+        </p>
+    }
+}
+
+#[component]
+pub fn Show<F, W, IV>(
+    /// The components Show wraps
+    children: Box<dyn Fn() -> Fragment>,
+    /// A closure that returns a bool that determines whether this thing runs
+    when: W,
+    /// A closure that returns what gets rendered if the when statement is false
+    fallback: F,
+) -> impl IntoView
+where
+    W: Fn() -> bool + 'static,
+    F: Fn() -> IV + 'static,
+    IV: IntoView,
+{
+    let memoized_when = create_memo(move |_| when());
+
+    move || match memoized_when.get() {
+        true => children().into_view(),
+        false => fallback().into_view(),
+    }
+}
+
+fn log(msg: impl std::fmt::Display) {
+    let log = use_context::<RwSignal<Vec<String>>>().unwrap();
+    log.update(|log| log.push(msg.to_string()));
+}
+
+fn main() {
+    leptos::mount_to_body(App)
+}
+```
+
+</details>
+</preview>

docs/book/src/reactivity/interlude_functions.md

@@ -6,7 +6,7 @@ application. It sometimes looks a little silly:
 
 ```rust
 // a signal holds a value, and can be updated
-let (count, set_count) = create_signal(cx, 0);
+let (count, set_count) = create_signal(0);
 
 // a derived signal is a function that accesses other signals
 let double_count = move || count() * 2;
@@ -19,11 +19,11 @@ let text = move || if count_is_odd() {
 
 // an effect automatically tracks the signals it depends on
 // and reruns when they change
-create_effect(cx, move |_| {
-    log!("text = {}", text());
+create_effect(move |_| {
+    logging::log!("text = {}", text());
 });
 
-view! { cx,
+view! {
     <p>{move || text().to_uppercase()}</p>
 }
 ```
@@ -53,12 +53,12 @@ Take our typical `<SimpleCounter/>` example in its simplest form:
 
 ```rust
 #[component]
-pub fn SimpleCounter(cx: Scope) -> impl IntoView {
-    let (value, set_value) = create_signal(cx, 0);
+pub fn SimpleCounter() -> impl IntoView {
+    let (value, set_value) = create_signal(0);
 
     let increment = move |_| set_value.update(|value| *value += 1);
 
-    view! { cx,
+    view! {
         <button on:click=increment>
             {value}
         </button>
@@ -68,7 +68,7 @@ pub fn SimpleCounter(cx: Scope) -> impl IntoView {
 
 The `SimpleCounter` function itself runs once. The `value` signal is created once. The framework hands off the `increment` function to the browser as an event listener. When you click the button, the browser calls `increment`, which updates `value` via `set_value`. And that updates the single text node represented in our view by `{value}`.
 
-Closures are key to reactivity. They provide the framework with the ability to rerun the smallest possible unit of your application in responsive to a change.
+Closures are key to reactivity. They provide the framework with the ability to rerun the smallest possible unit of your application in response to a change.
 
 So remember two things:
 

docs/book/src/reactivity/working_with_signals.md

@@ -9,22 +9,22 @@ There are four basic signal operations:
 1. [`.get()`](https://docs.rs/leptos/latest/leptos/struct.ReadSignal.html#impl-SignalGet%3CT%3E-for-ReadSignal%3CT%3E) clones the current value of the signal and tracks any future changes to the value reactively.
 2. [`.with()`](https://docs.rs/leptos/latest/leptos/struct.ReadSignal.html#impl-SignalWith%3CT%3E-for-ReadSignal%3CT%3E) takes a function, which receives the current value of the signal by reference (`&T`), and tracks any future changes.
 3. [`.set()`](https://docs.rs/leptos/latest/leptos/struct.WriteSignal.html#impl-SignalSet%3CT%3E-for-WriteSignal%3CT%3E) replaces the current value of the signal and notifies any subscribers that they need to update.
-4. [`.update()`](https://docs.rs/leptos/latest/leptos/struct.WriteSignal.html#impl-SignalUpdate%3CT%3E-for-WriteSignal%3CT%3E) takes a function, which receives a mutable reference to the current value of the signal (`&T`), and notifies any subscribers that they need to update. (`.update()` doesn’t return the value returned by the closure, but you can use [`.try_update()`](https://docs.rs/leptos/latest/leptos/trait.SignalUpdate.html#tymethod.try_update) if you need to; for example, if you’re removing an item from a `Vec<_>` and want the removed item.)
+4. [`.update()`](https://docs.rs/leptos/latest/leptos/struct.WriteSignal.html#impl-SignalUpdate%3CT%3E-for-WriteSignal%3CT%3E) takes a function, which receives a mutable reference to the current value of the signal (`&mut T`), and notifies any subscribers that they need to update. (`.update()` doesn’t return the value returned by the closure, but you can use [`.try_update()`](https://docs.rs/leptos/latest/leptos/trait.SignalUpdate.html#tymethod.try_update) if you need to; for example, if you’re removing an item from a `Vec<_>` and want the removed item.)
 
 Calling a `ReadSignal` as a function is syntax sugar for `.get()`. Calling a `WriteSignal` as a function is syntax sugar for `.set()`. So
 
 ```rust
-let (count, set_count) = create_signal(cx, 0);
+let (count, set_count) = create_signal(0);
 set_count(1);
-log!(count());
+logging::log!(count());
 ```
 
 is the same as
 
 ```rust
-let (count, set_count) = create_signal(cx, 0);
+let (count, set_count) = create_signal(0);
 set_count.set(1);
-log!(count.get());
+logging::log!(count.get());
 ```
 
 You might notice that `.get()` and `.set()` can be implemented in terms of `.with()` and `.update()`. In other words, `count.get()` is identical with `count.with(|n| n.clone())`, and `count.set(1)` is implemented by doing `count.update(|n| *n = 1)`.
@@ -36,7 +36,7 @@ However, there are some very good use cases for `.with()` and `.update()`.
 For example, consider a signal that holds a `Vec<String>`.
 
 ```rust
-let (names, set_names) = create_signal(cx, Vec::new());
+let (names, set_names) = create_signal(Vec::new());
 if names().is_empty() {
 	set_names(vec!["Alice".to_string()]);
 }
@@ -47,7 +47,7 @@ In terms of logic, this is simple enough, but it’s hiding some significant ine
 Likewise, `set_names` replaces the value with a whole new `Vec<_>`. This is fine, but we might as well just mutate the original `Vec<_>` in place.
 
 ```rust
-let (names, set_names) = create_signal(cx, Vec::new());
+let (names, set_names) = create_signal(Vec::new());
 if names.with(|names| names.is_empty()) {
 	set_names.update(|names| names.push("Alice".to_string()));
 }
@@ -63,43 +63,77 @@ if names.with(Vec::is_empty) {
 }
 ```
 
-After all, `.with()` simply takes a function that takes the value by reference. Since `Vec::is_empty` takes `&self`, we can pass it in directly and avoid the unncessary closure.
+After all, `.with()` simply takes a function that takes the value by reference. Since `Vec::is_empty` takes `&self`, we can pass it in directly and avoid the unnecessary closure.
+
+There are some helper macros to make using `.with()` and `.update()` easier to use, especially when using multiple signals.
+
+```rust
+let (first, _) = create_signal("Bob".to_string());
+let (middle, _) = create_signal("J.".to_string());
+let (last, _) = create_signal("Smith".to_string());
+```
+
+If you wanted to concatenate these 3 signals together without unnecessary cloning, you would have to write something like:
+
+```rust
+let name = move || {
+	first.with(|first| {
+		middle.with(|middle| last.with(|last| format!("{first} {middle} {last}")))
+	})
+};
+```
+
+Which is very long and annoying to write.
+
+Instead, you can use the `with!` macro to get references to all the signals at the same time.
+
+```rust
+let name = move || with!(|first, middle, last| format!("{first} {middle} {last}"));
+```
+
+This expands to the same thing as above. Take a look at the `with!` docs for more info, and the corresponding macros `update!`, `with_value!` and `update_value!`.
 
 ## Making signals depend on each other
 
 Often people ask about situations in which some signal needs to change based on some other signal’s value. There are three good ways to do this, and one that’s less than ideal but okay under controlled circumstances.
 
 ### Good Options
+
 **1) B is a function of A.** Create a signal for A and a derived signal or memo for B.
 
 ```rust
-let (count, set_count) = create_signal(cx, 1);
+let (count, set_count) = create_signal(1);
 let derived_signal_double_count = move || count() * 2;
-let memoized_double_count = create_memo(cx, move |_| count() * 2);
+let memoized_double_count = create_memo(move |_| count() * 2);
 ```
+
 > For guidance on whether to use a derived signal or a memo, see the docs for [`create_memo`](https://docs.rs/leptos/latest/leptos/fn.create_memo.html)
-> 
+
 **2) C is a function of A and some other thing B.** Create signals for A and B and a derived signal or memo for C.
 
 ```rust
-let (first_name, set_first_name) = create_signal(cx, "Bridget".to_string());
-let (last_name, set_last_name) = create_signal(cx, "Jones".to_string());
+let (first_name, set_first_name) = create_signal("Bridget".to_string());
+let (last_name, set_last_name) = create_signal("Jones".to_string());
 let full_name = move || format!("{} {}", first_name(), last_name());
 ```
+
 **3) A and B are independent signals, but sometimes updated at the same time.** When you make the call to update A, make a separate call to update B.
+
 ```rust
-let (age, set_age) = create_signal(cx, 32);
-let (favorite_number, set_favorite_number) = create_signal(cx, 42);
+let (age, set_age) = create_signal(32);
+let (favorite_number, set_favorite_number) = create_signal(42);
 // use this to handle a click on a `Clear` button
 let clear_handler = move |_| {
   set_age(0);
   set_favorite_number(0);
 };
 ```
+
 ### If you really must...
+
 **4) Create an effect to write to B whenever A changes.** This is officially discouraged, for several reasons:
 a) It will always be less efficient, as it means every time A updates you do two full trips through the reactive process. (You set A, which causes the effect to run, as well as any other effects that depend on A. Then you set B, which causes any effects that depend on B to run.)
-b) It increases your chances of accidentally creating things like infinite loops or over-re-running effects. This is the kind of ping-ponging, reactive spaghetti code that was common in the early 2010s and that we try to avoid with things like read-write segregation and discouraging writing to signals frome effects.
+b) It increases your chances of accidentally creating things like infinite loops or over-re-running effects. This is the kind of ping-ponging, reactive spaghetti code that was common in the early 2010s and that we try to avoid with things like read-write segregation and discouraging writing to signals from effects.
 
 In most situations, it’s best to rewrite things such that there’s a clear, top-down data flow based on derived signals or memos. But this isn’t the end of the world.
 

docs/book/src/router/16_routes.md

@@ -24,7 +24,7 @@ use leptos_router::*;
 
 Routing behavior is provided by the [`<Router/>`](https://docs.rs/leptos_router/latest/leptos_router/fn.Router.html) component. This should usually be somewhere near the root of your application, the rest of the app.
 
-> You shouldn’t try to use multiple `<Router/>`s in your app. Remember that the router drives global state: if you have multiple routers, which ones decides what to do when the URL changes?
+> You shouldn’t try to use multiple `<Router/>`s in your app. Remember that the router drives global state: if you have multiple routers, which one decides what to do when the URL changes?
 
 Let’s start with a simple `<App/>` component using the router:
 
@@ -33,8 +33,8 @@ use leptos::*;
 use leptos_router::*;
 
 #[component]
-pub fn App(cx: Scope) -> impl IntoView {
-  view! { cx,
+pub fn App() -> impl IntoView {
+  view! {
     <Router>
       <nav>
         /* ... */
@@ -58,8 +58,8 @@ use leptos::*;
 use leptos_router::*;
 
 #[component]
-pub fn App(cx: Scope) -> impl IntoView {
-  view! { cx,
+pub fn App() -> impl IntoView {
+  view! {
     <Router>
       <nav>
         /* ... */
@@ -83,19 +83,62 @@ The `path` can include
 - dynamic, named parameters beginning with a colon (`/:id`),
 - and/or a wildcard beginning with an asterisk (`/user/*any`)
 
-The `view` is a function that takes a `Scope` and returns a view.
+The `view` is a function that returns a view. Any component with no props works here, as does a closure that returns some view.
 
 ```rust
 <Routes>
-  <Route path="/" view=|cx| view! { cx, <Home/> }/>
-  <Route path="/users" view=|cx| view! { cx, <Users/> }/>
-  <Route path="/users/:id" view=|cx| view! { cx, <UserProfile/> }/>
-  <Route path="/*any" view=|cx| view! { cx, <NotFound/> }/>
+  <Route path="/" view=Home/>
+  <Route path="/users" view=Users/>
+  <Route path="/users/:id" view=UserProfile/>
+  <Route path="/*any" view=|| view! { <h1>"Not Found"</h1> }/>
 </Routes>
 ```
 
-> The router scores each route to see how good a match it is, so you can define your routes in any order.
+> `view` takes a `Fn() -> impl IntoView`. If a component has no props, it can be passed directly into the `view`. In this case, `view=Home` is just a shorthand for `|| view! { <Home/> }`.
 
 Now if you navigate to `/` or to `/users` you’ll get the home page or the `<Users/>`. If you go to `/users/3` or `/blahblah` you’ll get a user profile or your 404 page (`<NotFound/>`). On every navigation, the router determines which `<Route/>` should be matched, and therefore what content should be displayed where the `<Routes/>` component is defined.
 
+Note that you can define your routes in any order. The router scores each route to see how good a match it is, rather than simply trying to match them top to bottom.
+
 Simple enough?
+
+## Conditional Routes
+
+`leptos_router` is based on the assumption that you have one and only one `<Routes/>` component in your app. It uses this to generate routes on the server side, optimize route matching by caching calculated branches, and render your application.
+
+You should not conditionally render `<Routes/>` using another component like `<Show/>` or `<Suspense/>`.
+
+```rust
+// ❌ don't do this!
+view! {
+  <Show when=|| is_loaded() fallback=|| view! { <p>"Loading"</p> }>
+    <Routes>
+      <Route path="/" view=Home/>
+    </Routes>
+  </Show>
+}
+```
+
+Instead, you can use nested routing to render your `<Routes/>` once, and conditionally render the router outlet:
+
+```rust
+// ✅ do this instead!
+view! {
+  <Routes>
+    // parent route
+    <Route path="/" view=move || {
+      view! {
+        // only show the outlet if data have loaded
+        <Show when=|| is_loaded() fallback=|| view! { <p>"Loading"</p> }>
+          <Outlet/>
+        </Show>
+      }
+    }>
+      // nested child route
+      <Route path="/" view=Home/>
+    </Route>
+  </Routes>
+}
+```
+
+If this looks bizarre, don’t worry! The next section of the book is about this kind of nested routing.

docs/book/src/router/17_nested_routing.md

@@ -4,10 +4,10 @@ We just defined the following set of routes:
 
 ```rust
 <Routes>
-  <Route path="/" view=|cx| view! { cx, <Home /> }/>
-  <Route path="/users" view=|cx| view! { cx, <Users /> }/>
-  <Route path="/users/:id" view=|cx| view! { cx, <UserProfile /> }/>
-  <Route path="/*any" view=|cx| view! { cx, <NotFound /> }/>
+  <Route path="/" view=Home/>
+  <Route path="/users" view=Users/>
+  <Route path="/users/:id" view=UserProfile/>
+  <Route path="/*any" view=NotFound/>
 </Routes>
 ```
 
@@ -17,11 +17,11 @@ Well... you can!
 
 ```rust
 <Routes>
-  <Route path="/" view=|cx| view! { cx, <Home /> }/>
-  <Route path="/users" view=|cx| view! { cx, <Users /> }>
-    <Route path=":id" view=|cx| view! { cx, <UserProfile /> }/>
+  <Route path="/" view=Home/>
+  <Route path="/users" view=Users>
+    <Route path=":id" view=UserProfile/>
   </Route>
-  <Route path="/*any" view=|cx| view! { cx, <NotFound /> }/>
+  <Route path="/*any" view=NotFound/>
 </Routes>
 ```
 
@@ -39,8 +39,8 @@ Let’s look back at our practical example.
 
 ```rust
 <Routes>
-  <Route path="/users" view=|cx| view! { cx, <Users /> }/>
-  <Route path="/users/:id" view=|cx| view! { cx, <UserProfile /> }/>
+  <Route path="/users" view=Users/>
+  <Route path="/users/:id" view=UserProfile/>
 </Routes>
 ```
 
@@ -53,8 +53,8 @@ Let’s say I use nested routes instead:
 
 ```rust
 <Routes>
-  <Route path="/users" view=|cx| view! { cx, <Users /> }>
-    <Route path=":id" view=|cx| view! { cx, <UserProfile /> }/>
+  <Route path="/users" view=Users>
+    <Route path=":id" view=UserProfile/>
   </Route>
 </Routes>
 ```
@@ -68,9 +68,9 @@ I actually need to add a fallback route
 
 ```rust
 <Routes>
-  <Route path="/users" view=|cx| view! { cx, <Users /> }>
-    <Route path=":id" view=|cx| view! { cx, <UserProfile /> }/>
-    <Route path="" view=|cx| view! { cx, <NoUser /> }/>
+  <Route path="/users" view=Users>
+    <Route path=":id" view=UserProfile/>
+    <Route path="" view=NoUser/>
   </Route>
 </Routes>
 ```
@@ -94,9 +94,9 @@ You can easily define this with nested routes
 
 ```rust
 <Routes>
-  <Route path="/contacts" view=|cx| view! { cx, <ContactList/> }>
-    <Route path=":id" view=|cx| view! { cx, <ContactInfo/> }/>
-    <Route path="" view=|cx| view! { cx,
+  <Route path="/contacts" view=ContactList>
+    <Route path=":id" view=ContactInfo/>
+    <Route path="" view=|| view! {
       <p>"Select a contact to view more info."</p>
     }/>
   </Route>
@@ -107,13 +107,13 @@ You can go even deeper. Say you want to have tabs for each contact’s address,
 
 ```rust
 <Routes>
-  <Route path="/contacts" view=|cx| view! { cx, <ContactList/> }>
-    <Route path=":id" view=|cx| view! { cx, <ContactInfo/> }>
-      <Route path="" view=|cx| view! { cx, <EmailAndPhone/> }/>
-      <Route path="address" view=|cx| view! { cx, <Address/> }/>
-      <Route path="messages" view=|cx| view! { cx, <Messages/> }/>
+  <Route path="/contacts" view=ContactList>
+    <Route path=":id" view=ContactInfo>
+      <Route path="" view=EmailAndPhone/>
+      <Route path="address" view=Address/>
+      <Route path="messages" view=Messages/>
     </Route>
-    <Route path="" view=|cx| view! { cx,
+    <Route path="" view=|| view! {
       <p>"Select a contact to view more info."</p>
     }/>
   </Route>
@@ -124,7 +124,7 @@ You can go even deeper. Say you want to have tabs for each contact’s address,
 
 ## `<Outlet/>`
 
-Parent routes do not automatically render their nested routes. After all, they are just components; they don’t know exactly where they should render their children, and “just stick at at the end of the parent component” is not a great answer.
+Parent routes do not automatically render their nested routes. After all, they are just components; they don’t know exactly where they should render their children, and “just stick it at the end of the parent component” is not a great answer.
 
 Instead, you tell a parent component where to render any nested components with an `<Outlet/>` component. The `<Outlet/>` simply renders one of two things:
 
@@ -135,16 +135,16 @@ That’s all! But it’s important to know and to remember, because it’s a com
 
 ```rust
 #[component]
-pub fn ContactList(cx: Scope) -> impl IntoView {
+pub fn ContactList() -> impl IntoView {
   let contacts = todo!();
 
-  view! { cx,
+  view! {
     <div style="display: flex">
       // the contact list
       <For each=contacts
         key=|contact| contact.id
-        view=|cx, contact| todo!()
-      >
+        children=|contact| todo!()
+      />
       // the nested child, if any
       // don’t forget this!
       <Outlet/>
@@ -153,6 +153,43 @@ pub fn ContactList(cx: Scope) -> impl IntoView {
 }
 ```
 
+## Refactoring Route Definitions
+
+You don’t need to define all your routes in one place if you don’t want to. You can refactor any `<Route/>` and its children out into a separate component.
+
+For example, you can refactor the example above to use two separate components:
+
+```rust
+#[component]
+fn App() -> impl IntoView {
+  view! {
+    <Router>
+      <Routes>
+        <Route path="/contacts" view=ContactList>
+          <ContactInfoRoutes/>
+          <Route path="" view=|| view! {
+            <p>"Select a contact to view more info."</p>
+          }/>
+        </Route>
+      </Routes>
+    </Router>
+  }
+}
+
+#[component(transparent)]
+fn ContactInfoRoutes() -> impl IntoView {
+  view! {
+    <Route path=":id" view=ContactInfo>
+      <Route path="" view=EmailAndPhone/>
+      <Route path="address" view=Address/>
+      <Route path="messages" view=Messages/>
+    </Route>
+  }
+}
+```
+
+This second component is a `#[component(transparent)]`, meaning it just returns its data, not a view: in this case, it's a [`RouteDefinition`](https://docs.rs/leptos_router/latest/leptos_router/struct.RouteDefinition.html) struct, which is what the `<Route/>` returns. As long as it is marked `#[component(transparent)]`, this sub-route can be defined wherever you want, and inserted as a component into your tree of route definitions.
+
 ## Nested Routing and Performance
 
 All of this is nice, conceptually, but again—what’s the big deal?
@@ -167,6 +204,121 @@ In fact, in this case, we don’t even need to rerender the `<Contact/>` compone
 
 > This sandbox includes a couple features (like nested routing) discussed in this section and the previous one, and a couple we’ll cover in the rest of this chapter. The router is such an integrated system that it makes sense to provide a single example, so don’t be surprised if there’s anything you don’t understand.
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/16-router-fy4tjv?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A3%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A3%7D%5D)
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/16-router-0-5-4xp4zz?file=%2Fsrc%2Fmain.rs%3A102%2C2)
 
-<iframe src="https://codesandbox.io/p/sandbox/16-router-fy4tjv?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A3%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A3%7D%5D" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+<iframe src="https://codesandbox.io/p/sandbox/16-router-0-5-4xp4zz?file=%2Fsrc%2Fmain.rs%3A102%2C2" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use leptos::*;
+use leptos_router::*;
+
+#[component]
+fn App() -> impl IntoView {
+    view! {
+        <Router>
+            <h1>"Contact App"</h1>
+            // this <nav> will show on every routes,
+            // because it's outside the <Routes/>
+            // note: we can just use normal <a> tags
+            // and the router will use client-side navigation
+            <nav>
+                <h2>"Navigation"</h2>
+                <a href="/">"Home"</a>
+                <a href="/contacts">"Contacts"</a>
+            </nav>
+            <main>
+                <Routes>
+                    // / just has an un-nested "Home"
+                    <Route path="/" view=|| view! {
+                        <h3>"Home"</h3>
+                    }/>
+                    // /contacts has nested routes
+                    <Route
+                        path="/contacts"
+                        view=ContactList
+                      >
+                        // if no id specified, fall back
+                        <Route path=":id" view=ContactInfo>
+                            <Route path="" view=|| view! {
+                                <div class="tab">
+                                    "(Contact Info)"
+                                </div>
+                            }/>
+                            <Route path="conversations" view=|| view! {
+                                <div class="tab">
+                                    "(Conversations)"
+                                </div>
+                            }/>
+                        </Route>
+                        // if no id specified, fall back
+                        <Route path="" view=|| view! {
+                            <div class="select-user">
+                                "Select a user to view contact info."
+                            </div>
+                        }/>
+                    </Route>
+                </Routes>
+            </main>
+        </Router>
+    }
+}
+
+#[component]
+fn ContactList() -> impl IntoView {
+    view! {
+        <div class="contact-list">
+            // here's our contact list component itself
+            <div class="contact-list-contacts">
+                <h3>"Contacts"</h3>
+                <A href="alice">"Alice"</A>
+                <A href="bob">"Bob"</A>
+                <A href="steve">"Steve"</A>
+            </div>
+
+            // <Outlet/> will show the nested child route
+            // we can position this outlet wherever we want
+            // within the layout
+            <Outlet/>
+        </div>
+    }
+}
+
+#[component]
+fn ContactInfo() -> impl IntoView {
+    // we can access the :id param reactively with `use_params_map`
+    let params = use_params_map();
+    let id = move || params.with(|params| params.get("id").cloned().unwrap_or_default());
+
+    // imagine we're loading data from an API here
+    let name = move || match id().as_str() {
+        "alice" => "Alice",
+        "bob" => "Bob",
+        "steve" => "Steve",
+        _ => "User not found.",
+    };
+
+    view! {
+        <div class="contact-info">
+            <h4>{name}</h4>
+            <div class="tabs">
+                <A href="" exact=true>"Contact Info"</A>
+                <A href="conversations">"Conversations"</A>
+            </div>
+
+            // <Outlet/> here is the tabs that are nested
+            // underneath the /contacts/:id route
+            <Outlet/>
+        </div>
+    }
+}
+
+fn main() {
+    leptos::mount_to_body(App)
+}
+```
+
+</details>
+</preview>

docs/book/src/router/18_params_and_queries.md

@@ -36,14 +36,22 @@ struct ContactSearch {
 ```
 
 > Note: The `Params` derive macro is located at `leptos::Params`, and the `Params` trait is at `leptos_router::Params`. If you avoid using glob imports like `use leptos::*;`, make sure you’re importing the right one for the derive macro.
+>
+> If you are not using the `nightly` feature, you will get the error
+>
+> ```
+> no function or associated item named `into_param` found for struct `std::string::String` in the current scope
+> ```
+>
+> At the moment, supporting both `T: FromStr` and `Option<T>` for typed params requires a nightly feature. You can fix this by simply changing the struct to use `q: Option<String>` instead of `q: String`.
 
 Now we can use them in a component. Imagine a URL that has both params and a query, like `/contacts/:id?q=Search`.
 
 The typed versions return `Memo<Result<T, _>>`. It’s a Memo so it reacts to changes in the URL. It’s a `Result` because the params or query need to be parsed from the URL, and may or may not be valid.
 
 ```rust
-let params = use_params::<ContactParams>(cx);
-let query = use_query::<ContactSearch>(cx);
+let params = use_params::<ContactParams>();
+let query = use_query::<ContactSearch>();
 
 // id: || -> usize
 let id = move || {
@@ -58,8 +66,8 @@ let id = move || {
 The untyped versions return `Memo<ParamsMap>`. Again, it’s memo to react to changes in the URL. [`ParamsMap`](https://docs.rs/leptos_router/0.2.3/leptos_router/struct.ParamsMap.html) behaves a lot like any other map type, with a `.get()` method that returns `Option<&String>`.
 
 ```rust
-let params = use_params_map(cx);
-let query = use_query_map(cx);
+let params = use_params_map();
+let query = use_query_map();
 
 // id: || -> Option<String>
 let id = move || {
@@ -70,10 +78,125 @@ let id = move || {
 This can get a little messy: deriving a signal that wraps an `Option<_>` or `Result<_>` can involve a couple steps. But it’s worth doing this for two reasons:
 
 1. It’s correct, i.e., it forces you to consider the cases, “What if the user doesn’t pass a value for this query field? What if they pass an invalid value?”
-2. It’s performant. Specifically, when you navigate between different paths that match the same `<Route/>` with only params or the query changing, you can get fine-grained updates to different parts of your app without rerendering. For example, navigating between different contacts in our contact-list example does a targeted update to the name field (and eventually contact info) without needing to replacing or rerender the wrapping `<Contact/>`. This is what fine-grained reactivity is for.
+2. It’s performant. Specifically, when you navigate between different paths that match the same `<Route/>` with only params or the query changing, you can get fine-grained updates to different parts of your app without rerendering. For example, navigating between different contacts in our contact-list example does a targeted update to the name field (and eventually contact info) without needing to replace or rerender the wrapping `<Contact/>`. This is what fine-grained reactivity is for.
 
-> This is the same example from the previous section. The router is such an integrated system that it makes sense to provide a single example highlighting multiple features, even if we haven’t explain them all yet.
+> This is the same example from the previous section. The router is such an integrated system that it makes sense to provide a single example highlighting multiple features, even if we haven’t explained them all yet.
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/16-router-fy4tjv?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A3%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A3%7D%5D)
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/16-router-0-5-4xp4zz?file=%2Fsrc%2Fmain.rs%3A102%2C2)
 
-<iframe src="https://codesandbox.io/p/sandbox/16-router-fy4tjv?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A3%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A3%7D%5D" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+<iframe src="https://codesandbox.io/p/sandbox/16-router-0-5-4xp4zz?file=%2Fsrc%2Fmain.rs%3A102%2C2" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use leptos::*;
+use leptos_router::*;
+
+#[component]
+fn App() -> impl IntoView {
+    view! {
+        <Router>
+            <h1>"Contact App"</h1>
+            // this <nav> will show on every routes,
+            // because it's outside the <Routes/>
+            // note: we can just use normal <a> tags
+            // and the router will use client-side navigation
+            <nav>
+                <h2>"Navigation"</h2>
+                <a href="/">"Home"</a>
+                <a href="/contacts">"Contacts"</a>
+            </nav>
+            <main>
+                <Routes>
+                    // / just has an un-nested "Home"
+                    <Route path="/" view=|| view! {
+                        <h3>"Home"</h3>
+                    }/>
+                    // /contacts has nested routes
+                    <Route
+                        path="/contacts"
+                        view=ContactList
+                      >
+                        // if no id specified, fall back
+                        <Route path=":id" view=ContactInfo>
+                            <Route path="" view=|| view! {
+                                <div class="tab">
+                                    "(Contact Info)"
+                                </div>
+                            }/>
+                            <Route path="conversations" view=|| view! {
+                                <div class="tab">
+                                    "(Conversations)"
+                                </div>
+                            }/>
+                        </Route>
+                        // if no id specified, fall back
+                        <Route path="" view=|| view! {
+                            <div class="select-user">
+                                "Select a user to view contact info."
+                            </div>
+                        }/>
+                    </Route>
+                </Routes>
+            </main>
+        </Router>
+    }
+}
+
+#[component]
+fn ContactList() -> impl IntoView {
+    view! {
+        <div class="contact-list">
+            // here's our contact list component itself
+            <div class="contact-list-contacts">
+                <h3>"Contacts"</h3>
+                <A href="alice">"Alice"</A>
+                <A href="bob">"Bob"</A>
+                <A href="steve">"Steve"</A>
+            </div>
+
+            // <Outlet/> will show the nested child route
+            // we can position this outlet wherever we want
+            // within the layout
+            <Outlet/>
+        </div>
+    }
+}
+
+#[component]
+fn ContactInfo() -> impl IntoView {
+    // we can access the :id param reactively with `use_params_map`
+    let params = use_params_map();
+    let id = move || params.with(|params| params.get("id").cloned().unwrap_or_default());
+
+    // imagine we're loading data from an API here
+    let name = move || match id().as_str() {
+        "alice" => "Alice",
+        "bob" => "Bob",
+        "steve" => "Steve",
+        _ => "User not found.",
+    };
+
+    view! {
+        <div class="contact-info">
+            <h4>{name}</h4>
+            <div class="tabs">
+                <A href="" exact=true>"Contact Info"</A>
+                <A href="conversations">"Conversations"</A>
+            </div>
+
+            // <Outlet/> here is the tabs that are nested
+            // underneath the /contacts/:id route
+            <Outlet/>
+        </div>
+    }
+}
+
+fn main() {
+    leptos::mount_to_body(App)
+}
+```
+
+</details>
+</preview>

docs/book/src/router/19_a.md

@@ -11,13 +11,145 @@ The router will bail out of handling an `<a>` click under a number of situations
 
 In other words, the router will only try to do a client-side navigation when it’s pretty sure it can handle it, and it will upgrade every `<a>` element to get this special behavior.
 
+> This also means that if you need to opt out of client-side routing, you can do so easily. For example, if you have a link to another page on the same domain, but which isn’t part of your Leptos app, you can just use `<a rel="external">` to tell the router it isn’t something it can handle.
+
 The router also provides an [`<A>`](https://docs.rs/leptos_router/latest/leptos_router/fn.A.html) component, which does two additional things:
 
 1. Correctly resolves relative nested routes. Relative routing with ordinary `<a>` tags can be tricky. For example, if you have a route like `/post/:id`, `<A href="1">` will generate the correct relative route, but `<a href="1">` likely will not (depending on where it appears in your view.) `<A/>` resolves routes relative to the path of the nested route within which it appears.
 2. Sets the `aria-current` attribute to `page` if this link is the active link (i.e., it’s a link to the page you’re on). This is helpful for accessibility and for styling. For example, if you want to set the link a different color if it’s a link to the page you’re currently on, you can match this attribute with a CSS selector.
 
+## Navigating Programmatically
+
+Your most-used methods of navigating between pages should be with `<a>` and `<form>` elements or with the enhanced `<A/>` and `<Form/>` components. Using links and forms to navigate is the best solution for accessibility and graceful degradation.
+
+On occasion, though, you’ll want to navigate programmatically, i.e., call a function that can navigate to a new page. In that case, you should use the [`use_navigate`](https://docs.rs/leptos_router/latest/leptos_router/fn.use_navigate.html) function.
+
+```rust
+let navigate = leptos_router::use_navigate();
+navigate("/somewhere", Default::default());
+```
+
+> You should almost never do something like `<button on:click=move |_| navigate(/* ... */)>`. Any `on:click` that navigates should be an `<a>`, for reasons of accessibility.
+
+The second argument here is a set of [`NavigateOptions`](https://docs.rs/leptos_router/latest/leptos_router/struct.NavigateOptions.html), which includes options to resolve the navigation relative to the current route as the `<A/>` component does, replace it in the navigation stack, include some navigation state, and maintain the current scroll state on navigation.
+
 > Once again, this is the same example. Check out the relative `<A/>` components, and take a look at the CSS in `index.html` to see the ARIA-based styling.
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/16-router-fy4tjv?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A3%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A3%7D%5D)
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/16-router-0-5-4xp4zz?file=%2Fsrc%2Fmain.rs%3A102%2C2)
 
-<iframe src="https://codesandbox.io/p/sandbox/16-router-fy4tjv?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A3%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A3%7D%5D" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+<iframe src="https://codesandbox.io/p/sandbox/16-router-0-5-4xp4zz?file=%2Fsrc%2Fmain.rs%3A102%2C2" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use leptos::*;
+use leptos_router::*;
+
+#[component]
+fn App() -> impl IntoView {
+    view! {
+        <Router>
+            <h1>"Contact App"</h1>
+            // this <nav> will show on every routes,
+            // because it's outside the <Routes/>
+            // note: we can just use normal <a> tags
+            // and the router will use client-side navigation
+            <nav>
+                <h2>"Navigation"</h2>
+                <a href="/">"Home"</a>
+                <a href="/contacts">"Contacts"</a>
+            </nav>
+            <main>
+                <Routes>
+                    // / just has an un-nested "Home"
+                    <Route path="/" view=|| view! {
+                        <h3>"Home"</h3>
+                    }/>
+                    // /contacts has nested routes
+                    <Route
+                        path="/contacts"
+                        view=ContactList
+                      >
+                        // if no id specified, fall back
+                        <Route path=":id" view=ContactInfo>
+                            <Route path="" view=|| view! {
+                                <div class="tab">
+                                    "(Contact Info)"
+                                </div>
+                            }/>
+                            <Route path="conversations" view=|| view! {
+                                <div class="tab">
+                                    "(Conversations)"
+                                </div>
+                            }/>
+                        </Route>
+                        // if no id specified, fall back
+                        <Route path="" view=|| view! {
+                            <div class="select-user">
+                                "Select a user to view contact info."
+                            </div>
+                        }/>
+                    </Route>
+                </Routes>
+            </main>
+        </Router>
+    }
+}
+
+#[component]
+fn ContactList() -> impl IntoView {
+    view! {
+        <div class="contact-list">
+            // here's our contact list component itself
+            <div class="contact-list-contacts">
+                <h3>"Contacts"</h3>
+                <A href="alice">"Alice"</A>
+                <A href="bob">"Bob"</A>
+                <A href="steve">"Steve"</A>
+            </div>
+
+            // <Outlet/> will show the nested child route
+            // we can position this outlet wherever we want
+            // within the layout
+            <Outlet/>
+        </div>
+    }
+}
+
+#[component]
+fn ContactInfo() -> impl IntoView {
+    // we can access the :id param reactively with `use_params_map`
+    let params = use_params_map();
+    let id = move || params.with(|params| params.get("id").cloned().unwrap_or_default());
+
+    // imagine we're loading data from an API here
+    let name = move || match id().as_str() {
+        "alice" => "Alice",
+        "bob" => "Bob",
+        "steve" => "Steve",
+        _ => "User not found.",
+    };
+
+    view! {
+        <div class="contact-info">
+            <h4>{name}</h4>
+            <div class="tabs">
+                <A href="" exact=true>"Contact Info"</A>
+                <A href="conversations">"Conversations"</A>
+            </div>
+
+            // <Outlet/> here is the tabs that are nested
+            // underneath the /contacts/:id route
+            <Outlet/>
+        </div>
+    }
+}
+
+fn main() {
+    leptos::mount_to_body(App)
+}
+```
+
+</details>
+</preview>

docs/book/src/router/20_form.md

@@ -1,12 +1,12 @@
 # The `<Form/>` Component
 
-Links and forms sometimes seem completely unrelated. But in fact, they work in very similar ways.
+Links and forms sometimes seem completely unrelated. But, in fact, they work in very similar ways.
 
 In plain HTML, there are three ways to navigate to another page:
 
-1. An `<a>` element that links to another page. Navigates to the URL in its `href` attribute with the `GET` HTTP method.
-2. A `<form method="GET">`. Navigates to the URL in its `action` attribute with the `GET` HTTP method and the form data from its inputs encoded in the URL query string.
-3. A `<form method="POST">`. Navigates to the URL in its `action` attribute with the `POST` HTTP method and the form data from its inputs encoded in the body of the request.
+1. An `<a>` element that links to another page: Navigates to the URL in its `href` attribute with the `GET` HTTP method.
+2. A `<form method="GET">`: Navigates to the URL in its `action` attribute with the `GET` HTTP method and the form data from its inputs encoded in the URL query string.
+3. A `<form method="POST">`: Navigates to the URL in its `action` attribute with the `POST` HTTP method and the form data from its inputs encoded in the body of the request.
 
 Since we have a client-side router, we can do client-side link navigations without reloading the page, i.e., without a full round-trip to the server and back. It makes sense that we can do client-side form navigations in the same way.
 
@@ -24,17 +24,17 @@ async fn fetch_results() {
 }
 
 #[component]
-pub fn FormExample(cx: Scope) -> impl IntoView {
+pub fn FormExample() -> impl IntoView {
     // reactive access to URL query strings
-    let query = use_query_map(cx);
+    let query = use_query_map();
 	// search stored as ?q=
     let search = move || query().get("q").cloned().unwrap_or_default();
 	// a resource driven by the search string
-	let search_results = create_resource(cx, search, fetch_results);
+	let search_results = create_resource(search, fetch_results);
 
-	view! { cx,
+	view! {
 		<Form method="GET" action="">
-			<input type="search" name="search" value=search/>
+			<input type="search" name="q" value=search/>
 			<input type="submit"/>
 		</Form>
 		<Transition fallback=move || ()>
@@ -51,9 +51,9 @@ This is a great pattern. The data flow is extremely clear: all data flows from t
 We can actually take it a step further and do something kind of clever:
 
 ```rust
-view! { cx,
+view! {
 	<Form method="GET" action="">
-		<input type="search" name="search" value=search
+		<input type="search" name="q" value=search
 			oninput="this.form.requestSubmit()"
 		/>
 	</Form>
@@ -62,6 +62,119 @@ view! { cx,
 
 You’ll notice that this version drops the `Submit` button. Instead, we add an `oninput` attribute to the input. Note that this is _not_ `on:input`, which would listen for the `input` event and run some Rust code. Without the colon, `oninput` is the plain HTML attribute. So the string is actually a JavaScript string. `this.form` gives us the form the input is attached to. `requestSubmit()` fires the `submit` event on the `<form>`, which is caught by `<Form/>` just as if we had clicked a `Submit` button. Now the form will “navigate” on every keystroke or input to keep the URL (and therefore the search) perfectly in sync with the user’s input as they type.
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/16-router-forked-hrrt3h?file=%2Fsrc%2Fmain.rs)
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/20-form-0-5-9g7v9p?file=%2Fsrc%2Fmain.rs%3A1%2C1)
 
-<iframe src="https://codesandbox.io/p/sandbox/16-router-forked-hrrt3h?file=%2Fsrc%2Fmain.rs" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+<iframe src="https://codesandbox.io/p/sandbox/20-form-0-5-9g7v9p?file=%2Fsrc%2Fmain.rs%3A1%2C1" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use leptos::*;
+use leptos_router::*;
+
+#[component]
+fn App() -> impl IntoView {
+    view! {
+        <Router>
+            <h1><code>"<Form/>"</code></h1>
+            <main>
+                <Routes>
+                    <Route path="" view=FormExample/>
+                </Routes>
+            </main>
+        </Router>
+    }
+}
+
+#[component]
+pub fn FormExample() -> impl IntoView {
+    // reactive access to URL query
+    let query = use_query_map();
+    let name = move || query().get("name").cloned().unwrap_or_default();
+    let number = move || query().get("number").cloned().unwrap_or_default();
+    let select = move || query().get("select").cloned().unwrap_or_default();
+
+    view! {
+        // read out the URL query strings
+        <table>
+            <tr>
+                <td><code>"name"</code></td>
+                <td>{name}</td>
+            </tr>
+            <tr>
+                <td><code>"number"</code></td>
+                <td>{number}</td>
+            </tr>
+            <tr>
+                <td><code>"select"</code></td>
+                <td>{select}</td>
+            </tr>
+        </table>
+        // <Form/> will navigate whenever submitted
+        <h2>"Manual Submission"</h2>
+        <Form method="GET" action="">
+            // input names determine query string key
+            <input type="text" name="name" value=name/>
+            <input type="number" name="number" value=number/>
+            <select name="select">
+                // `selected` will set which starts as selected
+                <option selected=move || select() == "A">
+                    "A"
+                </option>
+                <option selected=move || select() == "B">
+                    "B"
+                </option>
+                <option selected=move || select() == "C">
+                    "C"
+                </option>
+            </select>
+            // submitting should cause a client-side
+            // navigation, not a full reload
+            <input type="submit"/>
+        </Form>
+        // This <Form/> uses some JavaScript to submit
+        // on every input
+        <h2>"Automatic Submission"</h2>
+        <Form method="GET" action="">
+            <input
+                type="text"
+                name="name"
+                value=name
+                // this oninput attribute will cause the
+                // form to submit on every input to the field
+                oninput="this.form.requestSubmit()"
+            />
+            <input
+                type="number"
+                name="number"
+                value=number
+                oninput="this.form.requestSubmit()"
+            />
+            <select name="select"
+                onchange="this.form.requestSubmit()"
+            >
+                <option selected=move || select() == "A">
+                    "A"
+                </option>
+                <option selected=move || select() == "B">
+                    "B"
+                </option>
+                <option selected=move || select() == "C">
+                    "C"
+                </option>
+            </select>
+            // submitting should cause a client-side
+            // navigation, not a full reload
+            <input type="submit"/>
+        </Form>
+    }
+}
+
+fn main() {
+    leptos::mount_to_body(App)
+}
+```
+
+</details>
+</preview>

docs/book/src/router/README.md

@@ -4,10 +4,10 @@
 
 Routing drives most websites. A router is the answer to the question, “Given this URL, what should appear on the page?”
 
-A URL consists of many parts. For example, the URL `https://leptos.dev/blog/search?q=Search#results` consists of
+A URL consists of many parts. For example, the URL `https://my-cool-blog.com/blog/search?q=Search#results` consists of
 
 - a _scheme_: `https`
-- a _domain_: `leptos.dev`
+- a _domain_: `my-cool-blog.com`
 - a **path**: `/blog/search`
 - a **query** (or **search**): `?q=Search`
 - a _hash_: `#results`

docs/book/src/server/25_server_functions.md

@@ -31,9 +31,8 @@ pub async fn add_todo(title: String) -> Result<(), ServerFnError> {
 }
 
 #[component]
-pub fn BusyButton(cx: Scope) -> impl IntoView {
+pub fn BusyButton() -> impl IntoView {
 	view! {
-        cx,
         <button on:click=move |_| {
             spawn_local(async {
                 add_todo("So much to do!".to_string()).await;
@@ -70,6 +69,18 @@ There are a few things to note about the way you define a server function, too.
 - We provide the macro a path. This is a prefix for the path at which we’ll mount a server function handler on our server. (See examples for [Actix](https://github.com/leptos-rs/leptos/blob/main/examples/todo_app_sqlite/src/main.rs#L44) and [Axum](https://github.com/leptos-rs/leptos/blob/598523cd9d0d775b017cb721e41ebae9349f01e2/examples/todo_app_sqlite_axum/src/main.rs#L51).)
 - You’ll need to have `serde` as a dependency with the `derive` featured enabled for the macro to work properly. You can easily add it to `Cargo.toml` with `cargo add serde --features=derive`.
 
+## Server Function URL Prefixes
+
+You can optionally define a specific URL prefix to be used in the definition of the server function.
+This is done by providing an optional 2nd argument to the `#[server]` macro.
+By default the URL prefix will be `/api`, if not specified.
+Here are some examples:
+
+```rust
+#[server(AddTodo)]         // will use the default URL prefix of `/api`
+#[server(AddTodo, "/foo")] // will use the URL prefix of `/foo`
+```
+
 ## Server Function Encodings
 
 By default, the server function call is a `POST` request that serializes the arguments as URL-encoded form data in the body of the request. (This means that server functions can be called from HTML forms, which we’ll see in a future chapter.) But there are a few other methods supported. Optionally, we can provide another argument to the `#[server]` macro to specify an alternate encoding:
@@ -97,6 +108,29 @@ In other words, you have two choices:
 
 **But remember**: Leptos will handle all the details of this encoding and decoding for you. When you use a server function, it looks just like calling any other asynchronous function!
 
+> **Why not `PUT` or `DELETE`? Why URL/form encoding, and not JSON?**
+>
+> These are reasonable questions. Much of the web is built on REST API patterns that encourage the use of semantic HTTP methods like `DELETE` to delete an item from a database, and many devs are accustomed to sending data to APIs in the JSON format.
+>
+> The reason we use `POST` or `GET` with URL-encoded data by default is the `<form>` support. For better or for worse, HTML forms don’t support `PUT` or `DELETE`, and they don’t support sending JSON. This means that if you use anything but a `GET` or `POST` request with URL-encoded data, it can only work once WASM has loaded. As we’ll see [in a later chapter](../progressive_enhancement), this isn’t always a great idea.
+>
+> The CBOR encoding is suported for historical reasons; an earlier version of server functions used a URL encoding that didn’t support nested objects like structs or vectors as server function arguments, which CBOR did. But note that the CBOR forms encounter the same issue as `PUT`, `DELETE`, or JSON: they do not degrade gracefully if the WASM version of your app is not available.
+
+
+## Server Functions Endpoint Paths
+
+By default, a unique path will be generated. You can optionally define a specific endpoint path to be used in the URL. This is done by providing an optional 4th argument to the `#[server]` macro. Leptos will generate the complete path by concatenating the URL prefix (2nd argument) and the endpoint path (4th argument).
+For example,
+
+```rust
+#[server(MyServerFnType, "/api", "Url", "hello")]
+```
+will generate a server function endpoint at `/api/hello` that accepts a POST request.
+
+> **Can I use the same server function endpoint path with multiple encodings?**
+>
+> No. Different server functions must have unique paths. The `#[server]` macro automatically generates unique paths, but you need to be careful if you choose to specify the complete path manually, as the server looks up server functions by their path.
+
 ## An Important Note on Security
 
 Server functions are a cool technology, but it’s very important to remember. **Server functions are not magic; they’re syntax sugar for defining a public API.** The _body_ of a server function is never made public; it’s just part of your server binary. But the server function is a publicly accessible API endpoint, and it’s return value is just a JSON or similar blob. You should _never_ return something sensitive from a server function.
@@ -105,7 +139,7 @@ Server functions are a cool technology, but it’s very important to remember. *
 
 So far, everything I’ve said is actually framework agnostic. (And in fact, the Leptos server function crate has been integrated into Dioxus as well!) Server functions are simply a way of defining a function-like RPC call that leans on Web standards like HTTP requests and URL encoding.
 
-But in a way, they also provide the last missing primitive in our story so far. Because a server function is just a plain Rust async function, it integrates perfectly with the async Leptos primitives we discussed [earlier](../async/README.md). So you can easily integrate your server functions with the rest of your applications:
+But in a way, they also provide the last missing primitive in our story so far. Because a server function is just a plain Rust async function, it integrates perfectly with the async Leptos primitives we discussed [earlier](https://leptos-rs.github.io/leptos/async/index.html). So you can easily integrate your server functions with the rest of your applications:
 
 - Create **resources** that call the server function to load data from the server
 - Read these resources under `<Suspense/>` or `<Transition/>` to enable streaming SSR and fallback states while data loads.

docs/book/src/server/26_extractors.md

@@ -6,9 +6,9 @@ The server functions we looked at in the last chapter showed how to run code on
 
 We call Leptos a “full-stack” framework, but “full-stack” is always a misnomer (after all, it never means everything from the browser to your power company.) For us, “full stack” means that your Leptos app can run in the browser, and can run on the server, and can integrate the two, drawing together the unique features available in each; as we’ve seen in the book so far, a button click on the browser can drive a database read on the server, both written in the same Rust module. But Leptos itself doesn’t provide the server (or the database, or the operating system, or the firmware, or the electrical cables...)
 
-Instead, Leptos provides integrations for the two most popular Rust web server frameworks, Actix Web ([`leptos_actix`](https://docs.rs/leptos_actix/latest/leptos_actix/)) and Axum ([`leptos_axum`](https://docs.rs/leptos_actix/latest/leptos_axum/)). We’ve built integrations with each server’s router so that you can simply plug your Leptos app into an existing server with `.leptos_routes()`, and easily handle server function calls.
+Instead, Leptos provides integrations for the two most popular Rust web server frameworks, Actix Web ([`leptos_actix`](https://docs.rs/leptos_actix/latest/leptos_actix/)) and Axum ([`leptos_axum`](https://docs.rs/leptos_axum/latest/leptos_axum/)). We’ve built integrations with each server’s router so that you can simply plug your Leptos app into an existing server with `.leptos_routes()`, and easily handle server function calls.
 
-> If haven’t seen our [Actix](https://github.com/leptos-rs/start) and [Axum](https://github.com/leptos-rs/start-axum) templates, now’s a good time to check them out.
+> If you haven’t seen our [Actix](https://github.com/leptos-rs/start) and [Axum](https://github.com/leptos-rs/start-axum) templates, now’s a good time to check them out.
 
 ## Using Extractors
 
@@ -23,12 +23,12 @@ The [`extract` function in `leptos_actix`](https://docs.rs/leptos_actix/latest/l
 ```rust
 
 #[server(ActixExtract, "/api")]
-pub async fn actix_extract(cx: Scope) -> Result<String, ServerFnError> {
+pub async fn actix_extract() -> Result<String, ServerFnError> {
 	use leptos_actix::extract;
     use actix_web::dev::ConnectionInfo;
     use actix_web::web::{Data, Query};
 
-    extract(cx,
+    extract(
         |search: Query<Search>, connection: ConnectionInfo| async move {
             format!(
                 "search = {}\nconnection = {:?}",
@@ -43,15 +43,15 @@ pub async fn actix_extract(cx: Scope) -> Result<String, ServerFnError> {
 
 ## Axum Extractors
 
-The syntax for the `leptos_axum::extract` function is very similar. (**Note**: This is available on the git main branch, but has not been released as of writing.) Note that Axum extractors return a `Result`, so you’ll need to add something to handle the error case.
+The syntax for the [`leptos_axum::extract`](https://docs.rs/leptos_axum/latest/leptos_axum/fn.extract.html) function is very similar. (**Note**: This is available on the git main branch, but has not been released as of writing.) Note that Axum extractors return a `Result`, so you’ll need to add something to handle the error case.
 
 ```rust
 #[server(AxumExtract, "/api")]
-pub async fn axum_extract(cx: Scope) -> Result<String, ServerFnError> {
+pub async fn axum_extract() -> Result<String, ServerFnError> {
     use axum::{extract::Query, http::Method};
     use leptos_axum::extract;
 
-    extract(cx, |method: Method, res: Query<MyQuery>| async move {
+    extract(|method: Method, res: Query<MyQuery>| async move {
             format!("{method:?} and {}", res.q)
         },
     )
@@ -62,6 +62,22 @@ pub async fn axum_extract(cx: Scope) -> Result<String, ServerFnError> {
 
 These are relatively simple examples accessing basic data from the server. But you can use extractors to access things like headers, cookies, database connection pools, and more, using the exact same `extract()` pattern.
 
+The Axum `extract` function only supports extractors for which the state is `()`. If you need an extractor that uses `State`, you should use [`extract_with_state`](https://docs.rs/leptos_axum/latest/leptos_axum/fn.extract_with_state.html). This requires you to provide the state. You can do this by extending the existing `LeptosOptions` state using the Axum `FromRef` pattern, which providing the state as context during render and server functions with custom handlers.
+
+```rust
+use axum::extract::FromRef;
+
+/// Derive FromRef to allow multiple items in state, using Axum’s
+/// SubStates pattern.
+#[derive(FromRef, Debug, Clone)]
+pub struct AppState{
+    pub leptos_options: LeptosOptions,
+    pub pool: SqlitePool
+}
+```
+
+[Click here for an example of providing context in custom handlers](https://github.com/leptos-rs/leptos/blob/19ea6fae6aec2a493d79cc86612622d219e6eebb/examples/session_auth_axum/src/main.rs#L24-L44).
+
 ## A Note about Data-Loading Patterns
 
 Because Actix and (especially) Axum are built on the idea of a single round-trip HTTP request and response, you typically run extractors near the “top” of your application (i.e., before you start rendering) and use the extracted data to determine how that should be rendered. Before you render a `<button>`, you load all the data your app could need. And any given route handler needs to know all the data that will need to be extracted by that route.

docs/book/src/server/27_response.md

@@ -1 +1,73 @@
 # Responses and Redirects
+
+Extractors provide an easy way to access request data inside server functions. Leptos also provides a way to modify the HTTP response, using the `ResponseOptions` type (see docs for [Actix](https://docs.rs/leptos_actix/latest/leptos_actix/struct.ResponseOptions.html) or [Axum](https://docs.rs/leptos_axum/latest/leptos_axum/struct.ResponseOptions.html)) types and the `redirect` helper function (see docs for [Actix](https://docs.rs/leptos_actix/latest/leptos_actix/fn.redirect.html) or [Axum](https://docs.rs/leptos_axum/latest/leptos_axum/fn.redirect.html)).
+
+## `ResponseOptions`
+
+`ResponseOptions` is provided via context during the initial server rendering response and during any subsequent server function call. It allows you to easily set the status code for the HTTP response, or to add headers to the HTTP response, e.g., to set cookies.
+
+```rust
+#[server(TeaAndCookies)]
+pub async fn tea_and_cookies() -> Result<(), ServerFnError> {
+	use actix_web::{cookie::Cookie, http::header, http::header::HeaderValue};
+	use leptos_actix::ResponseOptions;
+
+	// pull ResponseOptions from context
+	let response = expect_context::<ResponseOptions>();
+
+	// set the HTTP status code
+	response.set_status(StatusCode::IM_A_TEAPOT);
+
+	// set a cookie in the HTTP response
+	let mut cookie = Cookie::build("biscuits", "yes").finish();
+	if let Ok(cookie) = HeaderValue::from_str(&cookie.to_string()) {
+		res.insert_header(header::SET_COOKIE, cookie);
+	}
+}
+```
+
+## `redirect`
+
+One common modification to an HTTP response is to redirect to another page. The Actix and Axum integrations provide a `redirect` function to make this easy to do. `redirect` simply sets an HTTP status code of `302 Found` and sets the `Location` header.
+
+Here’s a simplified example from our [`session_auth_axum` example](https://github.com/leptos-rs/leptos/blob/a5f73b441c079f9138102b3a7d8d4828f045448c/examples/session_auth_axum/src/auth.rs#L154-L181).
+
+```rust
+#[server(Login, "/api")]
+pub async fn login(
+    username: String,
+    password: String,
+    remember: Option<String>,
+) -> Result<(), ServerFnError> {
+	// pull the DB pool and auth provider from context
+    let pool = pool()?;
+    let auth = auth()?;
+
+	// check whether the user exists
+    let user: User = User::get_from_username(username, &pool)
+        .await
+        .ok_or_else(|| {
+            ServerFnError::ServerError("User does not exist.".into())
+        })?;
+
+	// check whether the user has provided the correct password
+    match verify(password, &user.password)? {
+		// if the password is correct...
+        true => {
+			// log the user in
+            auth.login_user(user.id);
+            auth.remember_user(remember.is_some());
+
+			// and redirect to the home page
+            leptos_axum::redirect("/");
+            Ok(())
+        }
+		// if not, return an error
+        false => Err(ServerFnError::ServerError(
+            "Password does not match.".to_string(),
+        )),
+    }
+}
+```
+
+This server function can then be used from your application. This `redirect` works well with the progressively-enhanced `<ActionForm/>` component: without JS/WASM, the server response will redirect because of the status code and header. With JS/WASM, the `<ActionForm/>` will detect the redirect in the server function response, and use client-side navigation to redirect to the new page.

docs/book/src/ssr/23_ssr_modes.md

@@ -8,7 +8,12 @@ If you’ve ever listened to streaming music or watched a video online, I’m su
 
 Let me say a little more about what I mean.
 
-Leptos supports all four different of these different ways to render HTML that includes asynchronous data.
+Leptos supports all the major ways of rendering HTML that includes asynchronous data:
+
+1. [Synchronous Rendering](#synchronous-rendering)
+1. [Async Rendering](#async-rendering)
+1. [In-Order streaming](#in-order-streaming)
+1. [Out-of-Order Streaming](#out-of-order-streaming) (and a partially-blocked variant)
 
 ## Synchronous Rendering
 
@@ -62,9 +67,9 @@ If you’re using server-side rendering, the synchronous mode is almost never wh
   - Able to show the fallback loading state and dynamically replace it, instead of showing blank sections for un-loaded data.
 - _Cons_: Requires JavaScript to be enabled for suspended fragments to appear in correct order. (This small chunk of JS streamed down in a `<script>` tag alongside the `<template>` tag that contains the rendered `<Suspense/>` fragment, so it does not need to load any additional JS files.)
 
-5. **Partially-blocked streaming**: “Partially-blocked” streaming is useful when you have multiple separate `<Suspense/>` components on the page. If one of them reads from one or more “blocking resources” (see below), the fallback will not be sent; rather, the server will wait until that `<Suspense/>` has resolved and then replace the fallback with the resolved fragment on the server, which means that it is included in the initial HTML response and appears even if JavaScript is disabled or not supported. Other `<Suspense/>` stream in out of order as usual.
+5. **Partially-blocked streaming**: “Partially-blocked” streaming is useful when you have multiple separate `<Suspense/>` components on the page.  It is triggered by setting `ssr=SsrMode::PartiallyBlocked` on a route, and depending on blocking resources within the view.   If one of the `<Suspense/>` components reads from one or more “blocking resources” (see below), the fallback will not be sent; rather, the server will wait until that `<Suspense/>` has resolved and then replace the fallback with the resolved fragment on the server, which means that it is included in the initial HTML response and appears even if JavaScript is disabled or not supported. Other `<Suspense/>` stream in out of order, similar to the `SsrMode::OutOfOrder` default.
 
-This is useful when you have multiple `<Suspense/>` on the page, and one is more important than the other: think of a blog post and comments, or product information and reviews. It is *not* useful if there’s only one `<Suspense/>`, or if every `<Suspense/>` reads from blocking resources. In those cases it is a slower form of `async` rendering.
+This is useful when you have multiple `<Suspense/>` on the page, and one is more important than the other: think of a blog post and comments, or product information and reviews. It is _not_ useful if there’s only one `<Suspense/>`, or if every `<Suspense/>` reads from blocking resources. In those cases it is a slower form of `async` rendering.
 
 - _Pros_: Works if JavaScript is disabled or not supported on the user’s device.
 - _Cons_
@@ -79,13 +84,13 @@ Because it offers the best blend of performance characteristics, Leptos defaults
 ```rust
 <Routes>
 	// We’ll load the home page with out-of-order streaming and <Suspense/>
-	<Route path="" view=|cx| view! { cx, <HomePage/> }/>
+	<Route path="" view=HomePage/>
 
 	// We'll load the posts with async rendering, so they can set
 	// the title and metadata *after* loading the data
 	<Route
 		path="/post/:id"
-		view=|cx| view! { cx, <Post/> }
+		view=Post
 		ssr=SsrMode::Async
 	/>
 </Routes>
@@ -105,14 +110,14 @@ With blocking resources, I can do something like this:
 
 ```rust
 #[component]
-pub fn BlogPost(cx: Scope) -> impl IntoView {
-	let post_data = create_blocking_resource(cx, /* load blog post */);
-	let comment_data = create_resource(cx, /* load blog post */);
-	view! { cx,
+pub fn BlogPost() -> impl IntoView {
+	let post_data = create_blocking_resource(/* load blog post */);
+	let comment_data = create_resource(/* load blog post */);
+	view! {
 		<Suspense fallback=|| ()>
 			{move || {
-				post_data.with(cx, |data| {
-					view! { cx,
+				post_data.with(|data| {
+					view! {
 						<Title text=data.title/>
 						<Meta name="description" content=data.excerpt/>
 						<article>
@@ -129,4 +134,23 @@ pub fn BlogPost(cx: Scope) -> impl IntoView {
 }
 ```
 
-The first `<Suspense/>`, with the body of the blog post, will block my HTML stream, because it reads from a blocking resource. The second `<Suspense/>`, with the comments, will not block the stream. Blocking resources gave me exactly the power and granularity I needed to optimize my page for SEO and user experience.
+The first `<Suspense/>`, with the body of the blog post, will block my HTML stream, because it reads from a blocking resource.  Meta tags and other head elements awaiting the blocking resource will be rendered before the stream is sent.
+
+Combined with the following route definition, which uses `SsrMode::PartiallyBlocked`, the blocking resource will be fully rendered on the server side, making it accessible to users who disable WebAssembly or JavaScript.
+
+```rust
+<Routes>
+	// We’ll load the home page with out-of-order streaming and <Suspense/>
+	<Route path="" view=HomePage/>
+
+	// We'll load the posts with async rendering, so they can set
+	// the title and metadata *after* loading the data
+	<Route
+		path="/post/:id"
+		view=Post
+		ssr=SsrMode::PartiallyBlocked
+	/>
+</Routes>
+```
+
+The second `<Suspense/>`, with the comments, will not block the stream. Blocking resources gave me exactly the power and granularity I needed to optimize my page for SEO and user experience.

docs/book/src/ssr/24_hydration_bugs.md

@@ -8,8 +8,8 @@ Put a log somewhere in your root component. (I usually call mine `<App/>`, but a
 
 ```rust
 #[component]
-pub fn App(cx: Scope) -> impl IntoView {
-	leptos::log!("where do I run?");
+pub fn App() -> impl IntoView {
+	logging::log!("where do I run?");
 	// ... whatever
 }
 ```
@@ -57,15 +57,15 @@ One way to create a bug is by creating a mismatch between the HTML that’s sent
 
 ```rust
 #[component]
-pub fn App(cx: Scope) -> impl IntoView {
+pub fn App() -> impl IntoView {
     let data = if cfg!(target_arch = "wasm32") {
         vec![0, 1, 2]
     } else {
         vec![]
     };
     data.into_iter()
-        .map(|value| view! { cx, <span>{value}</span> })
-        .collect_view(cx)
+        .map(|value| view! { <span>{value}</span> })
+        .collect_view()
 }
 ```
 
@@ -74,11 +74,11 @@ In other words, if this is being compiled to WASM, it has three items; otherwise
 When I load the page in the browser, I see nothing. If I open the console I see a bunch of warnings:
 
 ```
-element with id 0-0-1 not found, ignoring it for hydration
-element with id 0-0-2 not found, ignoring it for hydration
-element with id 0-0-3 not found, ignoring it for hydration
-component with id _0-0-4c not found, ignoring it for hydration
-component with id _0-0-4o not found, ignoring it for hydration
+element with id 0-3 not found, ignoring it for hydration
+element with id 0-4 not found, ignoring it for hydration
+element with id 0-5 not found, ignoring it for hydration
+component with id _0-6c not found, ignoring it for hydration
+component with id _0-6o not found, ignoring it for hydration
 ```
 
 The WASM version of your app, running in the browser, expects to find three items; but the HTML has none.
@@ -87,6 +87,19 @@ The WASM version of your app, running in the browser, expects to find three item
 
 It’s pretty rare that you do this intentionally, but it could happen from somehow running different logic on the server and in the browser. If you’re seeing warnings like this and you don’t think it’s your fault, it’s much more likely that it’s a bug with `<Suspense/>` or something. Feel free to go ahead and open an [issue](https://github.com/leptos-rs/leptos/issues) or [discussion](https://github.com/leptos-rs/leptos/discussions) on GitHub for help.
 
+#### Solution
+
+You can simply tell the effect to wait a tick before updating the signal, by using something like `request_animation_frame`, which will set a short timeout and then update the signal before the next frame.
+
+```rust
+create_effect(move |_| {
+    // do something like reading from localStorage
+    request_animation_frame(move || set_loaded(true));
+});
+```
+
+This allows the browser to hydrate with the correct, matching state (`loaded` is `false` when it reaches the view), then immediately update it to `true` once hydration is complete.
+
 ### Not all client code can run on the server
 
 Imagine you happily import a dependency like `gloo-net` that you’ve been used to using to make requests in the browser, and use it in a `create_resource` in a server-rendered app.
@@ -113,10 +126,10 @@ For example, say that I want to store something in the browser’s `localStorage
 
 ```rust
 #[component]
-pub fn App(cx: Scope) -> impl IntoView {
+pub fn App() -> impl IntoView {
     use gloo_storage::Storage;
 	let storage = gloo_storage::LocalStorage::raw();
-	leptos::log!("{storage:?}");
+	logging::log!("{storage:?}");
 }
 ```
 
@@ -126,11 +139,11 @@ But if I wrap it in an effect...
 
 ```rust
 #[component]
-pub fn App(cx: Scope) -> impl IntoView {
+pub fn App() -> impl IntoView {
     use gloo_storage::Storage;
-    create_effect(cx, move |_| {
+    create_effect(move |_| {
         let storage = gloo_storage::LocalStorage::raw();
-		leptos::log!("{storage:?}");
+		logging::log!("{storage:?}");
     });
 }
 ```
@@ -145,4 +158,4 @@ In particular, you’ll sometimes see errors about the crate `mio` or missing th
 
 You can use `create_effect` to specify that something should only run on the client, and not in the server. Is there a way to specify that something should run only on the server, and not the client?
 
-In fact, there is. The next chapter will cover the topic of server functions in some detail. (In the meantime, you can check out their docs [here](https://docs.rs/leptos_server/0.2.5/leptos_server/index.html).)
+In fact, there is. The next chapter will cover the topic of server functions in some detail. (In the meantime, you can check out their docs [here](https://docs.rs/leptos_server/latest/leptos_server/index.html).)

docs/book/src/testing.md

@@ -14,8 +14,8 @@ For example, instead of embedding logic in a component directly like this:
 
 ```rust
 #[component]
-pub fn TodoApp(cx: Scope) -> impl IntoView {
-    let (todos, set_todos) = create_signal(cx, vec![Todo { /* ... */ }]);
+pub fn TodoApp() -> impl IntoView {
+    let (todos, set_todos) = create_signal(vec![Todo { /* ... */ }]);
     // ⚠️ this is hard to test because it's embedded in the component
     let num_remaining = move || todos.with(|todos| {
         todos.iter().filter(|todo| !todo.completed).sum()
@@ -37,14 +37,14 @@ impl Todos {
 #[cfg(test)]
 mod tests {
     #[test]
-    fn test_remaining {
+    fn test_remaining() {
         // ...
     }
 }
 
 #[component]
-pub fn TodoApp(cx: Scope) -> impl IntoView {
-    let (todos, set_todos) = create_signal(cx, Todos(vec![Todo { /* ... */ }]));
+pub fn TodoApp() -> impl IntoView {
+    let (todos, set_todos) = create_signal(Todos(vec![Todo { /* ... */ }]));
     // ✅ this has a test associated with it
     let num_remaining = move || todos.with(Todos::num_remaining);
 }
@@ -53,98 +53,48 @@ pub fn TodoApp(cx: Scope) -> impl IntoView {
 In general, the less of your logic is wrapped into your components themselves, the
 more idiomatic your code will feel and the easier it will be to test.
 
-## 2. Test components with `wasm-bindgen-test`
+## 2. Test components with end-to-end (`e2e`) testing
 
-[`wasm-bindgen-test`](https://crates.io/crates/wasm-bindgen-test) is a great utility
-for integrating or end-to-end testing WebAssembly apps in a headless browser.
+Our [`examples`](https://github.com/leptos-rs/leptos/tree/main/examples) directory has several examples with extensive end-to-end testing, using different testing tools.
 
-To use this testing utility, you need to add `wasm-bindgen-test` to your `Cargo.toml`:
+The easiest way to see how to use these is to take a look at the test examples themselves:
 
-```toml
-[dev-dependencies]
-wasm-bindgen-test = "0.3.0"
-```
+### `wasm-bindgen-test` with [`counter`](https://github.com/leptos-rs/leptos/blob/main/examples/counter/tests/web.rs)
 
-You should create tests in a separate `tests` directory. You can then run your tests in the browser of your choice:
+This is a fairly simple manual testing setup that uses the [`wasm-pack test`](https://rustwasm.github.io/wasm-pack/book/commands/test.html) command.
 
-```bash
-wasm-pack test --firefox
-```
+#### Sample Test
 
-> To see the full setup, check out the tests for the [`counter`](https://github.com/leptos-rs/leptos/tree/main/examples/counter) example.
-
-### Writing Your Tests
-
-Most tests will involve some combination of vanilla DOM manipulation and comparison to a `view`. For example, here’s a test [for the
-`counter` example](https://github.com/leptos-rs/leptos/blob/main/examples/counter/tests/mod.rs).
-
-First, we set up the testing environment.
-
-```rust
-use wasm_bindgen_test::*;
-use counter::*;
-use leptos::*;
-use web_sys::HtmlElement;
-
-// tell the test runner to run tests in the browser
-wasm_bindgen_test_configure!(run_in_browser);
-```
-
-I’m going to create a simpler wrapper for each test case, and mount it there.
-This makes it easy to encapsulate the test results.
-
-```rust
-// like marking a regular test with #[test]
+````rust
 #[wasm_bindgen_test]
 fn clear() {
     let document = leptos::document();
     let test_wrapper = document.create_element("section").unwrap();
-    document.body().unwrap().append_child(&test_wrapper);
+    let _ = document.body().unwrap().append_child(&test_wrapper);
 
-    // start by rendering our counter and mounting it to the DOM
-    // note that we start at the initial value of 10
     mount_to(
         test_wrapper.clone().unchecked_into(),
-        |cx| view! { cx, <SimpleCounter initial_value=10 step=1/> },
+        || view! { <SimpleCounter initial_value=10 step=1/> },
     );
-}
-```
 
-We’ll use some manual DOM operations to grab the `<div>` that wraps
-the whole component, as well as the `clear` button.
+    let div = test_wrapper.query_selector("div").unwrap().unwrap();
+    let clear = test_wrapper
+        .query_selector("button")
+        .unwrap()
+        .unwrap()
+        .unchecked_into::<web_sys::HtmlElement>();
 
-```rust
-// now we extract the buttons by iterating over the DOM
-// this would be easier if they had IDs
-let div = test_wrapper.query_selector("div").unwrap().unwrap();
-let clear = test_wrapper
-    .query_selector("button")
-    .unwrap()
-    .unwrap()
-    .unchecked_into::<web_sys::HtmlElement>();
-```
+    clear.click();
 
-Now we can use ordinary DOM APIs to simulate user interaction.
-
-```rust
-// now let's click the `clear` button
-clear.click();
-```
-
-You can test individual DOM element attributes or text node values. Sometimes
-I like to test the whole view at once. We can do this by testing the element’s
-`outerHTML` against our expectations.
-
-```rust
 assert_eq!(
     div.outer_html(),
     // here we spawn a mini reactive system to render the test case
-    run_scope(create_runtime(), |cx| {
+    run_scope(create_runtime(), || {
         // it's as if we're creating it with a value of 0, right?
-        let (value, set_value) = create_signal(cx, 0);
+        let (value, set_value) = create_signal(0);
 
         // we can remove the event listeners because they're not rendered to HTML
-        view! { cx,
+        view! {
             <div>
                 <button>"Clear"</button>
                 <button>"-1"</button>
@@ -157,24 +107,113 @@ assert_eq!(
         .outer_html()
     })
 );
-```
+}
+````
 
-That test involved us manually replicating the `view` that’s inside the component.
-There's actually an easier way to do this... We can just test against a `<SimpleCounter/>`
-with the initial value `0`. This is where our wrapping element comes in: I’ll just test
-the wrapper’s `innerHTML` against another comparison case.
+### [`wasm-bindgen-test` with `counters_stable`](https://github.com/leptos-rs/leptos/tree/main/examples/counters_stable/tests/web)
+
+This more developed test suite uses a system of fixtures to refactor the manual DOM manipulation of the `counter` tests and easily test a wide range of cases.
+
+#### Sample Test
 
 ```rust
-assert_eq!(test_wrapper.inner_html(), {
-    let comparison_wrapper = document.create_element("section").unwrap();
-    leptos::mount_to(
-        comparison_wrapper.clone().unchecked_into(),
-        |cx| view! { cx, <SimpleCounter initial_value=0 step=1/>},
-    );
-    comparison_wrapper.inner_html()
+use super::*;
+use crate::counters_page as ui;
+use pretty_assertions::assert_eq;
+
+#[wasm_bindgen_test]
+fn should_increase_the_total_count() {
+    // Given
+    ui::view_counters();
+    ui::add_counter();
+
+    // When
+    ui::increment_counter(1);
+    ui::increment_counter(1);
+    ui::increment_counter(1);
+
+    // Then
+    assert_eq!(ui::total(), 3);
+}
+```
+
+### [Playwright with `counters_stable`](https://github.com/leptos-rs/leptos/tree/main/examples/counters_stable/e2e)
+
+These tests use the common JavaScript testing tool Playwright to run end-to-end tests on the same example, using a library and testing approach familiar to may who have done frontend development before.
+
+#### Sample Test
+
+```js
+import { test, expect } from "@playwright/test";
+import { CountersPage } from "./fixtures/counters_page";
+
+test.describe("Increment Count", () => {
+  test("should increase the total count", async ({ page }) => {
+    const ui = new CountersPage(page);
+    await ui.goto();
+    await ui.addCounter();
+
+    await ui.incrementCount();
+    await ui.incrementCount();
+    await ui.incrementCount();
+
+    await expect(ui.total).toHaveText("3");
+  });
 });
 ```
 
-This is only a very limited introduction to testing. But I hope it’s useful as you begin to build applications.
+### [Gherkin/Cucumber Tests with `todo_app_sqlite`](https://github.com/leptos-rs/leptos/blob/main/examples/todo_app_sqlite/e2e/README.md)
 
-> For more, see [the testing section of the `wasm-bindgen` guide](https://rustwasm.github.io/wasm-bindgen/wasm-bindgen-test/index.html#testing-on-wasm32-unknown-unknown-with-wasm-bindgen-test).
+You can integrate any testing tool you’d like into this flow. This example uses Cucumber, a testing framework based on natural language.
+
+```
+@add_todo
+Feature: Add Todo
+
+    Background:
+        Given I see the app
+
+    @add_todo-see
+    Scenario: Should see the todo
+        Given I set the todo as Buy Bread
+        When I click the Add button
+        Then I see the todo named Buy Bread
+
+    # @allow.skipped
+    @add_todo-style
+    Scenario: Should see the pending todo
+        When I add a todo as Buy Oranges
+        Then I see the pending todo
+```
+
+The definitions for these actions are defined in Rust code.
+
+```rust
+use crate::fixtures::{action, world::AppWorld};
+use anyhow::{Ok, Result};
+use cucumber::{given, when};
+
+#[given("I see the app")]
+#[when("I open the app")]
+async fn i_open_the_app(world: &mut AppWorld) -> Result<()> {
+    let client = &world.client;
+    action::goto_path(client, "").await?;
+
+    Ok(())
+}
+
+#[given(regex = "^I add a todo as (.*)$")]
+#[when(regex = "^I add a todo as (.*)$")]
+async fn i_add_a_todo_titled(world: &mut AppWorld, text: String) -> Result<()> {
+    let client = &world.client;
+    action::add_todo(client, text.as_str()).await?;
+
+    Ok(())
+}
+
+// etc.
+```
+
+### Learning More
+
+Feel free to check out the CI setup in the Leptos repo to learn more about how to use these tools in your own application. All of these testing methods are run regularly against actual Leptos example apps.

docs/book/src/view/01_basic_component.md

@@ -13,7 +13,7 @@ DOM, with self-contained, defined behavior. Unlike HTML elements, they are in
 
 ```rust
 fn main() {
-    leptos::mount_to_body(|cx| view! { cx, <App/> })
+    leptos::mount_to_body(|| view! { <App/> })
 }
 ```
 
@@ -22,13 +22,13 @@ I’ll give you the whole thing up front, then walk through it line by line.
 
 ```rust
 #[component]
-fn App(cx: Scope) -> impl IntoView {
-    let (count, set_count) = create_signal(cx, 0);
+fn App() -> impl IntoView {
+    let (count, set_count) = create_signal(0);
 
-    view! { cx,
+    view! {
         <button
             on:click=move |_| {
-                set_count.update(|n| *n += 1);
+                set_count(3);
             }
         >
             "Click me: "
@@ -49,18 +49,17 @@ used as a component in your Leptos application. We’ll see some of the other fe
 this macro in a couple chapters.
 
 ```rust
-fn App(cx: Scope) -> impl IntoView
+fn App() -> impl IntoView
 ```
 
 Every component is a function with the following characteristics
 
-1. It takes a reactive [`Scope`](https://docs.rs/leptos/latest/leptos/struct.Scope.html)
-   as its first argument. This `Scope` is our entrypoint into the reactive system.
-   By convention, it’s usually named `cx`.
-2. You can include other arguments, which will be available as component “props.”
-3. Component functions return `impl IntoView`, which is an opaque type that includes
+1. It takes zero or more arguments of any type.
+2. It returns `impl IntoView`, which is an opaque type that includes
    anything you could return from a Leptos `view`.
 
+> Component function arguments are gathered together into a single props struct which is built by the `view` macro as needed.
+
 ## The Component Body
 
 The body of the component function is a set-up function that runs once, not a
@@ -69,7 +68,7 @@ few reactive variables, define any side effects that run in response to those va
 changing, and describe the user interface.
 
 ```rust
-let (count, set_count) = create_signal(cx, 0);
+let (count, set_count) = create_signal(0);
 ```
 
 [`create_signal`](https://docs.rs/leptos/latest/leptos/fn.create_signal.html)
@@ -85,7 +84,7 @@ current value, you’ll call `set_count.set(...)` (or `set_count(...)`).
 Leptos defines user interfaces using a JSX-like format via the [`view`](https://docs.rs/leptos/latest/leptos/macro.view.html) macro.
 
 ```rust
-view! { cx,
+view! {
     <button
         // define an event listener with on:
         on:click=move |_| {
@@ -127,7 +126,7 @@ Leptos with `nightly` Rust, signals are already functions, so the closure is unn
 As a result, you can write a simpler view:
 
 ```rust
-view! { cx,
+view! {
     <button /* ... */>
         "Click me: "
         // identical to {move || count.get()}
@@ -139,10 +138,10 @@ view! { cx,
 Remember—and this is _very important_—only functions are reactive. This means that
 `{count}` and `{count()}` do very different things in your view. `{count}` passes
 in a function, telling the framework to update the view every time `count` changes.
-`{count()}` access the value of `count` once, and passes an `i32` into the view,
+`{count()}` accesses the value of `count` once, and passes an `i32` into the view,
 rendering it once, unreactively. You can see the difference in the CodeSandbox below!
 
-Let’s make one final change. `set_count(3)` is a pretty useless thing for a click handler to do. Let’s replacing “set this value to 3” with “increment this value by 1”:
+Let’s make one final change. `set_count(3)` is a pretty useless thing for a click handler to do. Let’s replace “set this value to 3” with “increment this value by 1”:
 
 ```rust
 move |_| {
@@ -157,6 +156,70 @@ You can see here that while `set_count` just sets the value, `set_count.update()
 Other Previews > 8080.` Hover over any of the variables to show Rust-Analyzer details
 > and docs for what’s going on. Feel free to fork the examples to play with them yourself!
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/1-basic-component-3d74p3?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A31%2C%22endLineNumber%22%3A19%2C%22startColumn%22%3A31%2C%22startLineNumber%22%3A19%7D%5D)
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/1-basic-component-3d74p3?file=%2Fsrc%2Fmain.rs%3A1%2C1)
 
-<iframe src="https://codesandbox.io/p/sandbox/1-basic-component-3d74p3?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A31%2C%22endLineNumber%22%3A19%2C%22startColumn%22%3A31%2C%22startLineNumber%22%3A19%7D%5D" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+<iframe src="https://codesandbox.io/p/sandbox/1-basic-component-3d74p3?file=%2Fsrc%2Fmain.rs%3A1%2C1" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use leptos::*;
+
+// The #[component] macro marks a function as a reusable component
+// Components are the building blocks of your user interface
+// They define a reusable unit of behavior
+#[component]
+fn App() -> impl IntoView {
+    // here we create a reactive signal
+    // and get a (getter, setter) pair
+    // signals are the basic unit of change in the framework
+    // we'll talk more about them later
+    let (count, set_count) = create_signal(0);
+
+    // the `view` macro is how we define the user interface
+    // it uses an HTML-like format that can accept certain Rust values
+    view! {
+        <button
+            // on:click will run whenever the `click` event fires
+            // every event handler is defined as `on:{eventname}`
+
+            // we're able to move `set_count` into the closure
+            // because signals are Copy and 'static
+            on:click=move |_| {
+                set_count.update(|n| *n += 1);
+            }
+        >
+            // text nodes in RSX should be wrapped in quotes,
+            // like a normal Rust string
+            "Click me"
+        </button>
+        <p>
+            <strong>"Reactive: "</strong>
+            // you can insert Rust expressions as values in the DOM
+            // by wrapping them in curly braces
+            // if you pass in a function, it will reactively update
+            {move || count.get()}
+        </p>
+        <p>
+            <strong>"Reactive shorthand: "</strong>
+            // signals are functions, so we can remove the wrapping closure
+            {count}
+        </p>
+        <p>
+            <strong>"Not reactive: "</strong>
+            // NOTE: if you write {count()}, this will *not* be reactive
+            // it simply gets the value of count once
+            {count()}
+        </p>
+    }
+}
+
+// This `main` function is the entry point into the app
+// It just mounts our component to the <body>
+// Because we defined it as `fn App`, we can now use it in a
+// template as <App/>
+fn main() {
+    leptos::mount_to_body(|| view! { <App/> })
+}
+```

docs/book/src/view/02_dynamic_attributes.md

@@ -12,10 +12,10 @@ increment a counter.
 
 ```rust
 #[component]
-fn App(cx: Scope) -> impl IntoView {
-    let (count, set_count) = create_signal(cx, 0);
+fn App() -> impl IntoView {
+    let (count, set_count) = create_signal(0);
 
-    view! { cx,
+    view! {
         <button
             on:click=move |_| {
                 set_count.update(|n| *n += 1);
@@ -73,9 +73,9 @@ class=("button-20", move || count() % 2 == 1)
 Individual CSS properties can be directly updated with a similar `style:` syntax.
 
 ```rust
-let (x, set_x) = create_signal(cx, 0);
-let (y, set_y) = create_signal(cx, 0);
-view! { cx,
+let (x, set_x) = create_signal(0);
+let (y, set_y) = create_signal(0);
+view! {
     <div
         style="position: absolute"
         style:left=move || format!("{}px", x() + 100)
@@ -144,11 +144,119 @@ let double_count = move || count() * 2;
 Derived signals let you create reactive computed values that can be used in multiple
 places in your application with minimal overhead.
 
-> Note: Using a derived signal like this means that the calculation runs once per
-> signal change per place we access `double_count`; in other words, twice. This is a
-> very cheap calculation, so that’s fine. We’ll look at memos in a later chapter, which
-> are designed to solve this problem for expensive calculations.
+Note: Using a derived signal like this means that the calculation runs once per
+signal change (when `count()` changes) and once per place we access `double_count`;
+in other words, twice. This is a very cheap calculation, so that’s fine.
+We’ll look at memos in a later chapter, which re designed to solve this problem
+for expensive calculations.
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/2-dynamic-attribute-pqyvzl?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A2%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A2%7D%5D)
+> #### Advanced Topic: Injecting Raw HTML
+>
+> The `view` macro provides support for an additional attribute, `inner_html`, which
+> can be used to directly set the HTML contents of any element, wiping out any other
+> children you’ve given it. Note that this does _not_ escape the HTML you provide. You
+> should make sure that it only contains trusted input or that any HTML entities are
+> escaped, to prevent cross-site scripting (XSS) attacks.
+>
+> ```rust
+> let html = "<p>This HTML will be injected.</p>";
+> view! {
+>   <div inner_html=html/>
+> }
+> ```
+>
+> [Click here for the full `view` macros docs](https://docs.rs/leptos/latest/leptos/macro.view.html).
 
-<iframe src="https://codesandbox.io/p/sandbox/2-dynamic-attribute-pqyvzl?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A2%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A2%7D%5D" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/2-dynamic-attributes-0-5-lwdrpm?file=%2Fsrc%2Fmain.rs%3A1%2C1)
+
+<iframe src="https://codesandbox.io/p/sandbox/2-dynamic-attributes-0-5-lwdrpm?file=%2Fsrc%2Fmain.rs%3A1%2C1" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>Code Sandbox Source</summary>
+
+```rust
+use leptos::*;
+
+#[component]
+fn App() -> impl IntoView {
+    let (count, set_count) = create_signal(0);
+
+    // a "derived signal" is a function that accesses other signals
+    // we can use this to create reactive values that depend on the
+    // values of one or more other signals
+    let double_count = move || count() * 2;
+
+    view! {
+        <button
+            on:click=move |_| {
+                set_count.update(|n| *n += 1);
+            }
+            // the class: syntax reactively updates a single class
+            // here, we'll set the `red` class when `count` is odd
+            class:red=move || count() % 2 == 1
+        >
+            "Click me"
+        </button>
+        // NOTE: self-closing tags like <br> need an explicit /
+        <br/>
+
+        // We'll update this progress bar every time `count` changes
+        <progress
+            // static attributes work as in HTML
+            max="50"
+
+            // passing a function to an attribute
+            // reactively sets that attribute
+            // signals are functions, so this <=> `move || count.get()`
+            value=count
+        >
+        </progress>
+        <br/>
+
+        // This progress bar will use `double_count`
+        // so it should move twice as fast!
+        <progress
+            max="50"
+            // derived signals are functions, so they can also
+            // reactive update the DOM
+            value=double_count
+        >
+        </progress>
+        <p>"Count: " {count}</p>
+        <p>"Double Count: " {double_count}</p>
+    }
+}
+
+fn main() {
+    leptos::mount_to_body(App)
+}
+
+            // passing a function to an attribute
+            // reactively sets that attribute
+            // signals are functions, so this <=> `move || count.get()`
+            value=count
+        >
+        </progress>
+        <br/>
+
+        // This progress bar will use `double_count`
+        // so it should move twice as fast!
+        <progress
+            max="50"
+            // derived signals are functions, so they can also
+            // reactive update the DOM
+            value=double_count
+        >
+        </progress>
+        <p>"Count: " {count}</p>
+        <p>"Double Count: " {double_count}</p>
+    }
+}
+
+fn main() {
+    leptos::mount_to_body(App)
+}
+```
+
+</details>
+</preview>

docs/book/src/view/03_components.md

@@ -12,10 +12,10 @@ per click.
 You _could_ do this by just creating two `<progress>` elements:
 
 ```rust
-let (count, set_count) = create_signal(cx, 0);
+let (count, set_count) = create_signal(0);
 let double_count = move || count() * 2;
 
-view! { cx,
+view! {
     <progress
         max="50"
         value=count
@@ -35,10 +35,8 @@ Instead, let’s create a `<ProgressBar/>` component.
 
 ```rust
 #[component]
-fn ProgressBar(
-    cx: Scope
-) -> impl IntoView {
-    view! { cx,
+fn ProgressBar() -> impl IntoView {
+    view! {
         <progress
             max="50"
             // hmm... where will we get this from?
@@ -64,10 +62,9 @@ In Leptos, you define props by giving additional arguments to the component func
 ```rust
 #[component]
 fn ProgressBar(
-    cx: Scope,
     progress: ReadSignal<i32>
 ) -> impl IntoView {
-    view! { cx,
+    view! {
         <progress
             max="50"
             // now this works
@@ -81,9 +78,9 @@ Now we can use our component in the main `<App/>` component’s view.
 
 ```rust
 #[component]
-fn App(cx: Scope) -> impl IntoView {
-    let (count, set_count) = create_signal(cx, 0);
-    view! { cx,
+fn App() -> impl IntoView {
+    let (count, set_count) = create_signal(0);
+    view! {
         <button on:click=move |_| { set_count.update(|n| *n += 1); }>
             "Click me"
         </button>
@@ -98,18 +95,6 @@ notice that you can easily tell the difference between an element and a componen
 because components always have `PascalCase` names. You pass the `progress` prop
 in as if it were an HTML element attribute. Simple.
 
-> ### Important Note
->
-> For every `Component`, Leptos generates a corresponding `ComponentProps` type. This
-> is what allows us to have named props, when Rust does not have named function parameters.
-> If you’re defining a component in one module and importing it into another, make
-> sure you include this `ComponentProps` type:
->
-> `use progress_bar::{ProgressBar, ProgressBarProps};`
->
-> **Note**: This is still true as of `0.2.5`, but the requirement has been removed on `main`
-> and will not apply to later versions.
-
 ### Reactive and Static Props
 
 You’ll notice that throughout this example, `progress` takes a reactive
@@ -130,14 +115,13 @@ argument to the component function with `#[prop(optional)]`.
 ```rust
 #[component]
 fn ProgressBar(
-    cx: Scope,
     // mark this prop optional
     // you can specify it or not when you use <ProgressBar/>
     #[prop(optional)]
     max: u16,
     progress: ReadSignal<i32>
 ) -> impl IntoView {
-    view! { cx,
+    view! {
         <progress
             max=max
             value=progress
@@ -161,12 +145,11 @@ with `#[prop(default = ...)`.
 ```rust
 #[component]
 fn ProgressBar(
-    cx: Scope,
     #[prop(default = 100)]
     max: u16,
     progress: ReadSignal<i32>
 ) -> impl IntoView {
-    view! { cx,
+    view! {
         <progress
             max=max
             value=progress
@@ -183,11 +166,11 @@ as the `progress` prop on another `<ProgressBar/>`.
 
 ```rust
 #[component]
-fn App(cx: Scope) -> impl IntoView {
-    let (count, set_count) = create_signal(cx, 0);
+fn App() -> impl IntoView {
+    let (count, set_count) = create_signal(0);
     let double_count = move || count() * 2;
 
-    view! { cx,
+    view! {
         <button on:click=move |_| { set_count.update(|n| *n += 1); }>
             "Click me"
         </button>
@@ -211,7 +194,6 @@ implement the trait `Fn() -> i32`. So you could use a generic component:
 ```rust
 #[component]
 fn ProgressBar<F>(
-    cx: Scope,
     #[prop(default = 100)]
     max: u16,
     progress: F
@@ -219,7 +201,7 @@ fn ProgressBar<F>(
 where
     F: Fn() -> i32 + 'static,
 {
-    view! { cx,
+    view! {
         <progress
             max=max
             value=progress
@@ -231,9 +213,24 @@ where
 This is a perfectly reasonable way to write this component: `progress` now takes
 any value that implements this `Fn()` trait.
 
-> Note that generic component props _cannot_ be specified inline (as `<F: Fn() -> i32>`)
-> or as `progress: impl Fn() -> i32 + 'static,`, in part because they’re actually used to generate
-> a `struct ProgressBarProps`, and struct fields cannot be `impl` types.
+This generic can also be specified inline:
+
+```rust
+#[component]
+fn ProgressBar<F: Fn() -> i32 + 'static>(
+    #[prop(default = 100)] max: u16,
+    progress: F,
+) -> impl IntoView {
+    view! {
+        <progress
+            max=max
+            value=progress
+        />
+    }
+}
+```
+
+> Note that generic component props _can’t_ be specified with an `impl` yet (`progress: impl Fn() -> i32 + 'static,`), in part because they’re actually used to generate a `struct ProgressBarProps`, and struct fields cannot be `impl` types. The `#[component]` macro may be further improved in the future to allow inline `impl` generic props.
 
 ### `into` Props
 
@@ -251,14 +248,13 @@ reactive value.
 ```rust
 #[component]
 fn ProgressBar(
-    cx: Scope,
     #[prop(default = 100)]
     max: u16,
     #[prop(into)]
     progress: Signal<i32>
 ) -> impl IntoView
 {
-    view! { cx,
+    view! {
         <progress
             max=max
             value=progress
@@ -267,22 +263,95 @@ fn ProgressBar(
 }
 
 #[component]
-fn App(cx: Scope) -> impl IntoView {
-    let (count, set_count) = create_signal(cx, 0);
+fn App() -> impl IntoView {
+    let (count, set_count) = create_signal(0);
     let double_count = move || count() * 2;
 
-    view! { cx,
+    view! {
         <button on:click=move |_| { set_count.update(|n| *n += 1); }>
             "Click me"
         </button>
         // .into() converts `ReadSignal` to `Signal`
         <ProgressBar progress=count/>
         // use `Signal::derive()` to wrap a derived signal
-        <ProgressBar progress=Signal::derive(cx, double_count)/>
+        <ProgressBar progress=Signal::derive(double_count)/>
     }
 }
 ```
 
+### Optional Generic Props
+
+Note that you can’t specify optional generic props for a component. Let’s see what would happen if you try:
+
+```rust,compile_fail
+#[component]
+fn ProgressBar<F: Fn() -> i32 + 'static>(
+    #[prop(optional)] progress: Option<F>,
+) -> impl IntoView {
+    progress.map(|progress| {
+        view! {
+            <progress
+                max=100
+                value=progress
+            />
+        }
+    })
+}
+
+#[component]
+pub fn App() -> impl IntoView {
+    view! {
+        <ProgressBar/>
+    }
+}
+```
+
+Rust helpfully gives the error
+
+```
+xx |         <ProgressBar/>
+   |          ^^^^^^^^^^^ cannot infer type of the type parameter `F` declared on the function `ProgressBar`
+   |
+help: consider specifying the generic argument
+   |
+xx |         <ProgressBar::<F>/>
+   |                     +++++
+```
+
+There are just two problems:
+
+1. Leptos’s view macro doesn’t support specifying a generic on a component with this turbofish syntax.
+2. Even if you could, specifying the correct type here is not possible; closures and functions in general are unnameable types. The compiler can display them with a shorthand, but you can’t specify them.
+
+However, you can get around this by providing a concrete type using `Box<dyn _>` or `&dyn _`:
+
+```rust
+#[component]
+fn ProgressBar(
+    #[prop(optional)] progress: Option<Box<dyn Fn() -> i32>>,
+) -> impl IntoView {
+    progress.map(|progress| {
+        view! {
+            <progress
+                max=100
+                value=progress
+            />
+        }
+    })
+}
+
+#[component]
+pub fn App() -> impl IntoView {
+    view! {
+        <ProgressBar/>
+    }
+}
+```
+
+Because the Rust compiler now knows the concrete type of the prop, and therefore its size in memory even in the `None` case, this compiles fine.
+
+> In this particular case, `&dyn Fn() -> i32` will cause lifetime issues, but in other cases, it may be a possibility.
+
 ## Documenting Components
 
 This is one of the least essential but most important sections of this book.
@@ -297,7 +366,6 @@ component function, and each one of the props:
 /// Shows progress toward a goal.
 #[component]
 fn ProgressBar(
-    cx: Scope,
     /// The maximum value of the progress bar.
     #[prop(default = 100)]
     max: u16,
@@ -318,6 +386,96 @@ type, and each of the fields used to add props. It can be a little hard to
 understand how powerful this is until you hover over the component name or props
 and see the power of the `#[component]` macro combined with rust-analyzer here.
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/3-components-50t2e7?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A7%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A7%7D%5D)
+> #### Advanced Topic: `#[component(transparent)]`
+>
+> All Leptos components return `-> impl IntoView`. Some, though, need to return
+> some data directly without any additional wrapping. These can be marked with
+> `#[component(transparent)]`, in which case they return exactly the value they
+> return, without the rendering system transforming them in any way.
+>
+> This is mostly used in two situations:
+>
+> 1. Creating wrappers around `<Suspense/>` or `<Transition/>`, which return a
+>    transparent suspense structure to integrate with SSR and hydration properly.
+> 2. Refactoring `<Route/>` definitions for `leptos_router` out into separate
+>    components, because `<Route/>` is a transparent component that returns a
+>    `RouteDefinition` struct rather than a view.
+>
+> In general, you should not need to use transparent components unless you are
+> creating custom wrapping components that fall into one of these two categories.
 
-<iframe src="https://codesandbox.io/p/sandbox/3-components-50t2e7?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A7%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A7%7D%5D" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/3-components-0-5-5vvl69?file=%2Fsrc%2Fmain.rs%3A1%2C1)
+
+<iframe src="https://codesandbox.io/p/sandbox/3-components-0-5-5vvl69?file=%2Fsrc%2Fmain.rs%3A1%2C1" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use leptos::*;
+
+// Composing different components together is how we build
+// user interfaces. Here, we'll define a resuable <ProgressBar/>.
+// You'll see how doc comments can be used to document components
+// and their properties.
+
+/// Shows progress toward a goal.
+#[component]
+fn ProgressBar(
+    // Marks this as an optional prop. It will default to the default
+    // value of its type, i.e., 0.
+    #[prop(default = 100)]
+    /// The maximum value of the progress bar.
+    max: u16,
+    // Will run `.into()` on the value passed into the prop.
+    #[prop(into)]
+    // `Signal<T>` is a wrapper for several reactive types.
+    // It can be helpful in component APIs like this, where we
+    // might want to take any kind of reactive value
+    /// How much progress should be displayed.
+    progress: Signal<i32>,
+) -> impl IntoView {
+    view! {
+        <progress
+            max={max}
+            value=progress
+        />
+        <br/>
+    }
+}
+
+#[component]
+fn App() -> impl IntoView {
+    let (count, set_count) = create_signal(0);
+
+    let double_count = move || count() * 2;
+
+    view! {
+        <button
+            on:click=move |_| {
+                set_count.update(|n| *n += 1);
+            }
+        >
+            "Click me"
+        </button>
+        <br/>
+        // If you have this open in CodeSandbox or an editor with
+        // rust-analyzer support, try hovering over `ProgressBar`,
+        // `max`, or `progress` to see the docs we defined above
+        <ProgressBar max=50 progress=count/>
+        // Let's use the default max value on this one
+        // the default is 100, so it should move half as fast
+        <ProgressBar progress=count/>
+        // Signal::derive creates a Signal wrapper from our derived signal
+        // using double_count means it should move twice as fast
+        <ProgressBar max=50 progress=Signal::derive(double_count)/>
+    }
+}
+
+fn main() {
+    leptos::mount_to_body(App)
+}
+```
+
+</details>
+</preview>

docs/book/src/view/04_iteration.md

@@ -5,7 +5,7 @@ iterating over a list of items is a common task in web applications. Reconciling
 the differences between changing sets of items can also be one of the trickiest
 tasks for a framework to handle well.
 
-Leptos supports to two different patterns for iterating over items:
+Leptos supports two different patterns for iterating over items:
 
 1. For static views: `Vec<_>`
 2. For dynamic lists: `<For/>`
@@ -19,30 +19,30 @@ any `Vec<IV> where IV: IntoView` into your view. In other words, if you can rend
 
 ```rust
 let values = vec![0, 1, 2];
-view! { cx,
+view! {
     // this will just render "012"
     <p>{values.clone()}</p>
     // or we can wrap them in <li>
     <ul>
         {values.into_iter()
-            .map(|n| view! { cx, <li>{n}</li>})
+            .map(|n| view! { <li>{n}</li>})
             .collect::<Vec<_>>()}
     </ul>
 }
 ```
 
-Leptos also provides a `.collect_view(cx)` helper function that allows you to collect any iterator of `T: IntoView` into `Vec<View>`.
+Leptos also provides a `.collect_view()` helper function that allows you to collect any iterator of `T: IntoView` into `Vec<View>`.
 
 ```rust
 let values = vec![0, 1, 2];
-view! { cx,
+view! {
     // this will just render "012"
     <p>{values.clone()}</p>
     // or we can wrap them in <li>
     <ul>
         {values.into_iter()
-            .map(|n| view! { cx, <li>{n}</li>})
-            .collect_view(cx)}
+            .map(|n| view! { <li>{n}</li>})
+            .collect_view()}
     </ul>
 }
 ```
@@ -51,14 +51,15 @@ The fact that the _list_ is static doesn’t mean the interface needs to be stat
 You can render dynamic items as part of a static list.
 
 ```rust
-// create a list of N signals
-let counters = (1..=length).map(|idx| create_signal(cx, idx));
+// create a list of 5 signals
+let length = 5;
+let counters = (1..=length).map(|idx| create_signal(idx));
 
 // each item manages a reactive view
 // but the list itself will never change
 let counter_buttons = counters
     .map(|(count, set_count)| {
-        view! { cx,
+        view! {
             <li>
                 <button
                     on:click=move |_| set_count.update(|n| *n += 1)
@@ -68,9 +69,9 @@ let counter_buttons = counters
             </li>
         }
     })
-    .collect_view(cx);
+    .collect_view();
 
-view! { cx,
+view! {
     <ul>{counter_buttons}</ul>
 }
 ```
@@ -86,7 +87,7 @@ keyed dynamic list. It takes three props:
 
 - `each`: a function (such as a signal) that returns the items `T` to be iterated over
 - `key`: a key function that takes `&T` and returns a stable, unique key or ID
-- `view`: renders each `T` into a view
+- `children`: renders each `T` into a view
 
 `key` is, well, the key. You can add, remove, and move items within the list. As
 long as each item’s key is stable over time, the framework does not need to rerender
@@ -103,6 +104,162 @@ it is generated, and using that as an ID for the key function.
 
 Check out the `<DynamicList/>` component below for an example.
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/4-iteration-sglt1o?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A6%2C%22endLineNumber%22%3A55%2C%22startColumn%22%3A5%2C%22startLineNumber%22%3A31%7D%5D)
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/4-iteration-0-5-pwdn2y?file=%2Fsrc%2Fmain.rs%3A1%2C1)
 
-<iframe src="https://codesandbox.io/p/sandbox/4-iteration-sglt1o?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A6%2C%22endLineNumber%22%3A55%2C%22startColumn%22%3A5%2C%22startLineNumber%22%3A31%7D%5D" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+<iframe src="https://codesandbox.io/p/sandbox/4-iteration-0-5-pwdn2y?file=%2Fsrc%2Fmain.rs%3A1%2C1" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use leptos::*;
+
+// Iteration is a very common task in most applications.
+// So how do you take a list of data and render it in the DOM?
+// This example will show you the two ways:
+// 1) for mostly-static lists, using Rust iterators
+// 2) for lists that grow, shrink, or move items, using <For/>
+
+#[component]
+fn App() -> impl IntoView {
+    view! {
+        <h1>"Iteration"</h1>
+        <h2>"Static List"</h2>
+        <p>"Use this pattern if the list itself is static."</p>
+        <StaticList length=5/>
+        <h2>"Dynamic List"</h2>
+        <p>"Use this pattern if the rows in your list will change."</p>
+        <DynamicList initial_length=5/>
+    }
+}
+
+/// A list of counters, without the ability
+/// to add or remove any.
+#[component]
+fn StaticList(
+    /// How many counters to include in this list.
+    length: usize,
+) -> impl IntoView {
+    // create counter signals that start at incrementing numbers
+    let counters = (1..=length).map(|idx| create_signal(idx));
+
+    // when you have a list that doesn't change, you can
+    // manipulate it using ordinary Rust iterators
+    // and collect it into a Vec<_> to insert it into the DOM
+    let counter_buttons = counters
+        .map(|(count, set_count)| {
+            view! {
+                <li>
+                    <button
+                        on:click=move |_| set_count.update(|n| *n += 1)
+                    >
+                        {count}
+                    </button>
+                </li>
+            }
+        })
+        .collect::<Vec<_>>();
+
+    // Note that if `counter_buttons` were a reactive list
+    // and its value changed, this would be very inefficient:
+    // it would rerender every row every time the list changed.
+    view! {
+        <ul>{counter_buttons}</ul>
+    }
+}
+
+/// A list of counters that allows you to add or
+/// remove counters.
+#[component]
+fn DynamicList(
+    /// The number of counters to begin with.
+    initial_length: usize,
+) -> impl IntoView {
+    // This dynamic list will use the <For/> component.
+    // <For/> is a keyed list. This means that each row
+    // has a defined key. If the key does not change, the row
+    // will not be re-rendered. When the list changes, only
+    // the minimum number of changes will be made to the DOM.
+
+    // `next_counter_id` will let us generate unique IDs
+    // we do this by simply incrementing the ID by one
+    // each time we create a counter
+    let mut next_counter_id = initial_length;
+
+    // we generate an initial list as in <StaticList/>
+    // but this time we include the ID along with the signal
+    let initial_counters = (0..initial_length)
+        .map(|id| (id, create_signal(id + 1)))
+        .collect::<Vec<_>>();
+
+    // now we store that initial list in a signal
+    // this way, we'll be able to modify the list over time,
+    // adding and removing counters, and it will change reactively
+    let (counters, set_counters) = create_signal(initial_counters);
+
+    let add_counter = move |_| {
+        // create a signal for the new counter
+        let sig = create_signal(next_counter_id + 1);
+        // add this counter to the list of counters
+        set_counters.update(move |counters| {
+            // since `.update()` gives us `&mut T`
+            // we can just use normal Vec methods like `push`
+            counters.push((next_counter_id, sig))
+        });
+        // increment the ID so it's always unique
+        next_counter_id += 1;
+    };
+
+    view! {
+        <div>
+            <button on:click=add_counter>
+                "Add Counter"
+            </button>
+            <ul>
+                // The <For/> component is central here
+                // This allows for efficient, key list rendering
+                <For
+                    // `each` takes any function that returns an iterator
+                    // this should usually be a signal or derived signal
+                    // if it's not reactive, just render a Vec<_> instead of <For/>
+                    each=counters
+                    // the key should be unique and stable for each row
+                    // using an index is usually a bad idea, unless your list
+                    // can only grow, because moving items around inside the list
+                    // means their indices will change and they will all rerender
+                    key=|counter| counter.0
+                    // `children` receives each item from your `each` iterator
+                    // and returns a view
+                    children=move |(id, (count, set_count))| {
+                        view! {
+                            <li>
+                                <button
+                                    on:click=move |_| set_count.update(|n| *n += 1)
+                                >
+                                    {count}
+                                </button>
+                                <button
+                                    on:click=move |_| {
+                                        set_counters.update(|counters| {
+                                            counters.retain(|(counter_id, _)| counter_id != &id)
+                                        });
+                                    }
+                                >
+                                    "Remove"
+                                </button>
+                            </li>
+                        }
+                    }
+                />
+            </ul>
+        </div>
+    }
+}
+
+fn main() {
+    leptos::mount_to_body(App)
+}
+```
+
+</details>
+</preview>

docs/book/src/view/04b_iteration.md

@@ -0,0 +1,278 @@
+# Iterating over More Complex Data with `<For/>`
+
+This chapter goes into iteration over nested data structures in a bit
+more depth. It belongs here with the other chapter on iteration, but feel
+free to skip it and come back if you’d like to stick with simpler subjects
+for now.
+
+## The Problem
+
+I just said that the framework does not rerender any of the items in one of the
+rows, unless the key has changed. This probably makes sense at first, but it can
+easily trip you up.
+
+Let’s consider an example in which each of the items in our row is some data structure.
+Imagine, for example, that the items come from some JSON array of keys and values:
+
+```rust
+#[derive(Debug, Clone)]
+struct DatabaseEntry {
+    key: String,
+    value: i32,
+}
+```
+
+Let’s define a simple component that will iterate over the rows and display each one:
+
+```rust
+#[component]
+pub fn App() -> impl IntoView {
+	// start with a set of three rows
+    let (data, set_data) = create_signal(vec![
+        DatabaseEntry {
+            key: "foo".to_string(),
+            value: 10,
+        },
+        DatabaseEntry {
+            key: "bar".to_string(),
+            value: 20,
+        },
+        DatabaseEntry {
+            key: "baz".to_string(),
+            value: 15,
+        },
+    ]);
+    view! {
+		// when we click, update each row,
+		// doubling its value
+        <button on:click=move |_| {
+            set_data.update(|data| {
+                for row in data {
+                    row.value *= 2;
+                }
+            });
+			// log the new value of the signal
+            logging::log!("{:?}", data.get());
+        }>
+            "Update Values"
+        </button>
+		// iterate over the rows and display each value
+        <For
+            each=data
+            key=|state| state.key.clone()
+            let:child
+        >
+            <p>{child.value}</p>
+        </For>
+    }
+}
+```
+
+> Note the `let:child` syntax here. In the previous chapter we introduced `<For/>`
+> with a `children` prop. We can actually create this value directly in the children
+> of the `<For/>` component, without breaking out of the `view` macro: the `let:child`
+> combined with `<p>{child.value}</p>` above is the equivalent of
+>
+> ```rust
+> children=|child| view! { <p>{child.value}</p> }
+> ```
+
+When you click the `Update Values` button... nothing happens. Or rather:
+the signal is updated, the new value is logged, but the `{child.value}`
+for each row doesn’t update.
+
+Let’s see: is that because we forgot to add a closure to make it reactive?
+Let’s try `{move || child.value}`.
+
+...Nope. Still nothing.
+
+Here’s the problem: as I said, each row is only rerendered when the key changes.
+We’ve updated the value for each row, but not the key for any of the rows, so
+nothing has rerendered. And if you look at the type of `child.value`, it’s a plain
+`i32`, not a reactive `ReadSignal<i32>` or something. This means that even if we
+wrap a closure around it, the value in this row will never update.
+
+We have three possible solutions:
+
+1. change the `key` so that it always updates when the data structure changes
+2. change the `value` so that it’s reactive
+3. take a reactive slice of the data structure instead of using each row directly
+
+## Option 1: Change the Key
+
+Each row is only rerendered when the key changes. Our rows above didn’t rerender,
+because the key didn’t change. So: why not just force the key to change?
+
+```rust
+<For
+	each=data
+	key=|state| (state.key.clone(), state.value)
+	let:child
+>
+	<p>{child.value}</p>
+</For>
+```
+
+Now we include both the key and the value in the `key`. This means that whenever the
+value of a row changes, `<For/>` will treat it as if it’s an entirely new row, and
+replace the previous one.
+
+### Pros
+
+This is very easy. We can make it even easier by deriving `PartialEq`, `Eq`, and `Hash`
+on `DatabaseEntry`, in which case we could just `key=|state| state.clone()`.
+
+### Cons
+
+**This is the least efficient of the three options.** Every time the value of a row
+changes, it throws out the previous `<p>` element and replaces it with an entirely new
+one. Rather than making a fine-grained update to the text node, in other words, it really
+does rerender the entire row on every change, and this is expensive in proportion to how
+complex the UI of the row is.
+
+You’ll notice we also end up cloning the whole data structure so that `<For/>` can hold
+onto a copy of the key. For more complex structures, this can become a bad idea fast!
+
+## Option 2: Nested Signals
+
+If we do want that fine-grained reactivity for the value, one option is to wrap the `value`
+of each row in a signal.
+
+```rust
+#[derive(Debug, Clone)]
+struct DatabaseEntry {
+    key: String,
+    value: RwSignal<i32>,
+}
+```
+
+`RwSignal<_>` is a “read-write signal,” which combines the getter and setter in one object.
+I’m using it here because it’s a little easier to store in a struct than separate getters
+and setters.
+
+```rust
+#[component]
+pub fn App() -> impl IntoView {
+	// start with a set of three rows
+    let (data, set_data) = create_signal(vec![
+        DatabaseEntry {
+            key: "foo".to_string(),
+            value: create_rw_signal(10),
+        },
+        DatabaseEntry {
+            key: "bar".to_string(),
+            value: create_rw_signal(20),
+        },
+        DatabaseEntry {
+            key: "baz".to_string(),
+            value: create_rw_signal(15),
+        },
+    ]);
+    view! {
+		// when we click, update each row,
+		// doubling its value
+        <button on:click=move |_| {
+            data.with(|data| {
+                for row in data {
+                    row.value.update(|value| *value *= 2);
+                }
+            });
+			// log the new value of the signal
+            logging::log!("{:?}", data.get());
+        }>
+            "Update Values"
+        </button>
+		// iterate over the rows and display each value
+        <For
+            each=data
+            key=|state| state.key.clone()
+            let:child
+        >
+            <p>{child.value}</p>
+        </For>
+    }
+}
+```
+
+This version works! And if you look in the DOM inspector in your browser, you’ll
+see that unlike in the previous version, in this version only the individual text
+nodes are updated. Passing the signal directly into `{child.value}` works, as
+signals do keep their reactivity if you pass them into the view.
+
+Note that I changed the `set_data.update()` to a `data.with()`. `.with()` is the
+non-cloning way of accessing a signal’s value. In this case, we are only updating
+the internal values, not updating the list of values: because signals maintain their
+own state, we don’t actual need to update the `data` signal at all, so the immutable
+`.with()` is fine here.
+
+> In fact, this version doesn’t update `data`, so the `<For/>` is essentially a static
+> list as in the last chapter, and this could just be a plain iterator. But the `<For/>`
+> is useful if we want to add or remove rows in the future.
+
+### Pros
+
+This is the most efficient option, and fits directly with the rest of the mental model
+of the framework: values that change over time are wrapped in signals so the interface
+can respond to them.
+
+### Cons
+
+Nested reactivity can be cumbersome if you’re receiving data from an API or another
+data source you don’t control, and you don’t want to create a different struct wrapping
+each field in a signal.
+
+## Option 3: Memoized Slices
+
+Leptos provides a primitive called [`create_memo`](https://docs.rs/leptos/latest/leptos/fn.create_memo.html),
+which creates a derived computation that only triggers a reactive update when its value
+has changed.
+
+This allows you to create reactive values for subfields of a larger data structure,
+without needing to wrap the fields of that structure in signals.
+
+Most of the application can remain the same as the initial (broken) version, but the `<For/>`
+will be updated to this:
+
+```rust
+<For
+    each=move || data().into_iter().enumerate()
+    key=|(_, state)| state.key.clone()
+    children=move |(index, _)| {
+        let value = create_memo(move |_| {
+            data.with(|data| data.get(index).map(|d| d.value).unwrap_or(0))
+        });
+        view! {
+            <p>{value}</p>
+        }
+    }
+/>
+```
+
+You’ll notice a few differences here:
+
+- we convert the `data` signal into an enumerated iterator
+- we use the `children` prop explicitly, to make it easier to run some non-`view` code
+- we define a `value` memo and use that in the view. This `value` field doesn’t actually
+  use the `child` being passed into each row. Instead, it uses the index and reaches back
+  into the original `data` to get the value.
+
+Every time `data` changes, now, each memo will be recalculated. If its value has changed,
+it will update its text node, without rerendering the whole row.
+
+## Pros
+
+We get the same fine-grained reactivity of the signal-wrapped version, without needing to
+wrap the data in signals.
+
+## Cons
+
+It’s a bit more complex to set up this memo-per-row inside the `<For/>` loop rather than
+using nested signals. For example, you’ll notice that we have to guard against the possibility
+that the `data[index]` would panic by using `data.get(index)`, because this memo may be 
+triggered to re-run once just after the row is removed. (This is because the memo for each row
+and the whole `<For/>` both depend on the same `data` signal, and the order of execution for
+multiple reactive values that depend on the same signal isn’t guaranteed.)
+
+Note also that while memos memoize their reactive changes, the same
+calculation does need to re-run to check the value every time, so nested reactive signals
+will still be more efficient for pinpoint updates here.

docs/book/src/view/05_forms.md

@@ -19,12 +19,13 @@ There are two important things to remember:
 2. The `value` _attribute_ only sets the initial value of the input, i.e., it
    only updates the input up to the point that you begin typing. The `value`
    _property_ continues updating the input after that. You usually want to set
-   `prop:value` for this reason.
+   `prop:value` for this reason. (The same is true for `checked` and `prop:checked`
+   on an `<input type="checkbox">`.)
 
 ```rust
-let (name, set_name) = create_signal(cx, "Controlled".to_string());
+let (name, set_name) = create_signal("Controlled".to_string());
 
-view! { cx,
+view! {
     <input type="text"
         on:input=move |ev| {
             // event_target_value is a Leptos helper function
@@ -42,6 +43,33 @@ view! { cx,
 }
 ```
 
+> #### Why do you need `prop:value`?
+>
+> Web browsers are the most ubiquitous and stable platform for rendering graphical user interfaces in existence. They have also maintained an incredible backwards compatibility over their three decades of existence. Inevitably, this means there are some quirks.
+>
+> One odd quirk is that there is a distinction between HTML attributes and DOM element properties, i.e., between something called an “attribute” which is parsed from HTML and can be set on a DOM element with `.setAttribute()`, and something called a “property” which is a field of the JavaScript class representation of that parsed HTML element.
+>
+> In the case of an `<input value=...>`, setting the `value` _attribute_ is defined as setting the initial value for the input, and setting `value` _property_ sets its current value. It maybe easiest to understand this by opening `about:blank` and running the following JavaScript in the browser console, line by line:
+>
+> ```js
+> // create an input and append it to the DOM
+> const el = document.createElement("input");
+> document.body.appendChild(el);
+>
+> el.setAttribute("value", "test"); // updates the input
+> el.setAttribute("value", "another test"); // updates the input again
+>
+> // now go and type into the input: delete some characters, etc.
+>
+> el.setAttribute("value", "one more time?");
+> // nothing should have changed. setting the "initial value" does nothing now
+>
+> // however...
+> el.value = "But this works";
+> ```
+>
+> Many other frontend frameworks conflate attributes and properties, or create a special case for inputs that sets the value correctly. Maybe Leptos should do this too; but for now, I prefer giving users the maximum amount of control over whether they’re setting an attribute or a property, and doing my best to educate people about the actual underlying browser behavior rather than obscuring it.
+
 ## Uncontrolled Inputs
 
 In an "uncontrolled input," the browser controls the state of the input element.
@@ -53,9 +81,9 @@ In this example, we only notify the framework when the `<form>` fires a `submit`
 event.
 
 ```rust
-let (name, set_name) = create_signal(cx, "Uncontrolled".to_string());
+let (name, set_name) = create_signal("Uncontrolled".to_string());
 
-let input_element: NodeRef<Input> = create_node_ref(cx);
+let input_element: NodeRef<Input> = create_node_ref();
 ```
 
 `NodeRef` is a kind of reactive smart pointer: we can use it to access the
@@ -89,7 +117,7 @@ We can then call `.value()` to get the value out of the input, because `NodeRef`
 gives us access to a correctly-typed HTML element.
 
 ```rust
-view! { cx,
+view! {
     <form on:submit=on_submit>
         <input type="text"
             value=name
@@ -109,6 +137,114 @@ The view should be pretty self-explanatory by now. Note two things:
 2. We use `node_ref` to fill the `NodeRef`. (Older examples sometimes use `_ref`.
    They are the same thing, but `node_ref` has better rust-analyzer support.)
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/5-form-inputs-ih9m62?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A12%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A12%7D%5D)
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/5-forms-0-5-rf2t7c?file=%2Fsrc%2Fmain.rs%3A1%2C1)
 
-<iframe src="https://codesandbox.io/p/sandbox/5-form-inputs-ih9m62?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A12%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A12%7D%5D" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+<iframe src="https://codesandbox.io/p/sandbox/5-forms-0-5-rf2t7c?file=%2Fsrc%2Fmain.rs%3A1%2C1" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use leptos::{ev::SubmitEvent, *};
+
+#[component]
+fn App() -> impl IntoView {
+    view! {
+        <h2>"Controlled Component"</h2>
+        <ControlledComponent/>
+        <h2>"Uncontrolled Component"</h2>
+        <UncontrolledComponent/>
+    }
+}
+
+#[component]
+fn ControlledComponent() -> impl IntoView {
+    // create a signal to hold the value
+    let (name, set_name) = create_signal("Controlled".to_string());
+
+    view! {
+        <input type="text"
+            // fire an event whenever the input changes
+            on:input=move |ev| {
+                // event_target_value is a Leptos helper function
+                // it functions the same way as event.target.value
+                // in JavaScript, but smooths out some of the typecasting
+                // necessary to make this work in Rust
+                set_name(event_target_value(&ev));
+            }
+
+            // the `prop:` syntax lets you update a DOM property,
+            // rather than an attribute.
+            //
+            // IMPORTANT: the `value` *attribute* only sets the
+            // initial value, until you have made a change.
+            // The `value` *property* sets the current value.
+            // This is a quirk of the DOM; I didn't invent it.
+            // Other frameworks gloss this over; I think it's
+            // more important to give you access to the browser
+            // as it really works.
+            //
+            // tl;dr: use prop:value for form inputs
+            prop:value=name
+        />
+        <p>"Name is: " {name}</p>
+    }
+}
+
+#[component]
+fn UncontrolledComponent() -> impl IntoView {
+    // import the type for <input>
+    use leptos::html::Input;
+
+    let (name, set_name) = create_signal("Uncontrolled".to_string());
+
+    // we'll use a NodeRef to store a reference to the input element
+    // this will be filled when the element is created
+    let input_element: NodeRef<Input> = create_node_ref();
+
+    // fires when the form `submit` event happens
+    // this will store the value of the <input> in our signal
+    let on_submit = move |ev: SubmitEvent| {
+        // stop the page from reloading!
+        ev.prevent_default();
+
+        // here, we'll extract the value from the input
+        let value = input_element()
+            // event handlers can only fire after the view
+            // is mounted to the DOM, so the `NodeRef` will be `Some`
+            .expect("<input> to exist")
+            // `NodeRef` implements `Deref` for the DOM element type
+            // this means we can call`HtmlInputElement::value()`
+            // to get the current value of the input
+            .value();
+        set_name(value);
+    };
+
+    view! {
+        <form on:submit=on_submit>
+            <input type="text"
+                // here, we use the `value` *attribute* to set only
+                // the initial value, letting the browser maintain
+                // the state after that
+                value=name
+
+                // store a reference to this input in `input_element`
+                node_ref=input_element
+            />
+            <input type="submit" value="Submit"/>
+        </form>
+        <p>"Name is: " {name}</p>
+    }
+}
+
+// This `main` function is the entry point into the app
+// It just mounts our component to the <body>
+// Because we defined it as `fn App`, we can now use it in a
+// template as <App/>
+fn main() {
+    leptos::mount_to_body(App)
+}
+```
+
+</details>
+</preview>

docs/book/src/view/06_control_flow.md

@@ -38,7 +38,7 @@ special knowledge.
 For example, let’s start with a simple signal and derived signal:
 
 ```rust
-let (value, set_value) = create_signal(cx, 0);
+let (value, set_value) = create_signal(0);
 let is_odd = move || value() & 1 == 1;
 ```
 
@@ -54,7 +54,7 @@ Let’s say I want to render some text if the number is odd, and some other text
 if it’s even. Well, how about this?
 
 ```rust
-view! { cx,
+view! {
     <p>
     {move || if is_odd() {
         "Odd"
@@ -81,7 +81,7 @@ let message = move || {
     }
 };
 
-view! { cx,
+view! {
     <p>{message}</p>
 }
 ```
@@ -90,7 +90,7 @@ This works fine. We can make it a little shorter if we’d like, using `bool::th
 
 ```rust
 let message = move || is_odd().then(|| "Ding ding ding!");
-view! { cx,
+view! {
     <p>{message}</p>
 }
 ```
@@ -112,7 +112,7 @@ let message = move || {
         _ => "Even"
     }
 };
-view! { cx,
+view! {
     <p>{message}</p>
 }
 ```
@@ -131,7 +131,7 @@ above, where the value switches from even to odd on every change, this is fine.
 But consider the following example:
 
 ```rust
-let (value, set_value) = create_signal(cx, 0);
+let (value, set_value) = create_signal(0);
 
 let message = move || if value() > 5 {
     "Big"
@@ -139,7 +139,7 @@ let message = move || if value() > 5 {
     "Small"
 };
 
-view! { cx,
+view! {
     <p>{message}</p>
 }
 ```
@@ -148,10 +148,10 @@ This _works_, for sure. But if you added a log, you might be surprised
 
 ```rust
 let message = move || if value() > 5 {
-    log!("{}: rendering Big", value());
+    logging::log!("{}: rendering Big", value());
     "Big"
 } else {
-    log!("{}: rendering Small", value());
+    logging::log!("{}: rendering Small", value());
     "Small"
 };
 ```
@@ -194,12 +194,12 @@ the answer. You pass it a `when` condition function, a `fallback` to be shown if
 the `when` function returns `false`, and children to be rendered if `when` is `true`.
 
 ```rust
-let (value, set_value) = create_signal(cx, 0);
+let (value, set_value) = create_signal(0);
 
-view! { cx,
+view! {
   <Show
-    when=move || value() > 5
-    fallback=|cx| view! { cx, <Small/> }
+    when=move || { value() > 5 }
+    fallback=|| view! { <Small/> }
   >
     <Big/>
   </Show>
@@ -208,7 +208,8 @@ view! { cx,
 
 `<Show/>` memoizes the `when` condition, so it only renders its `<Small/>` once,
 continuing to show the same component until `value` is greater than five;
-then it renders `<Big/>` once, continuing to show it indefinitely.
+then it renders `<Big/>` once, continuing to show it indefinitely or until `value`
+goes below five and then renders `<Small/>` again.
 
 This is a helpful tool to avoid rerendering when using dynamic `if` expressions.
 As always, there's some overhead: for a very simple node (like updating a single
@@ -227,19 +228,19 @@ can be a little annoying if you’re returning different HTML elements from
 different branches of a conditional:
 
 ```rust,compile_error
-view! { cx,
+view! {
     <main>
         {move || match is_odd() {
             true if value() == 1 => {
                 // returns HtmlElement<Pre>
-                view! { cx, <pre>"One"</pre> }
+                view! { <pre>"One"</pre> }
             },
             false if value() == 2 => {
                 // returns HtmlElement<P>
-                view! { cx, <p>"Two"</p> }
+                view! { <p>"Two"</p> }
             }
             // returns HtmlElement<Textarea>
-            _ => view! { cx, <textarea>{value()}</textarea> }
+            _ => view! { <textarea>{value()}</textarea> }
         }}
     </main>
 }
@@ -259,29 +260,125 @@ to get yourself out of this situation:
 1. If you have multiple `HtmlElement` types, convert them to `HtmlElement<AnyElement>`
    with [`.into_any()`](https://docs.rs/leptos/latest/leptos/struct.HtmlElement.html#method.into_any)
 2. If you have a variety of view types that are not all `HtmlElement`, convert them to
-   `View`s with [`.into_view(cx)`](https://docs.rs/leptos/latest/leptos/trait.IntoView.html#tymethod.into_view).
+   `View`s with [`.into_view()`](https://docs.rs/leptos/latest/leptos/trait.IntoView.html#tymethod.into_view).
 
 Here’s the same example, with the conversion added:
 
 ```rust,compile_error
-view! { cx,
+view! {
     <main>
         {move || match is_odd() {
             true if value() == 1 => {
                 // returns HtmlElement<Pre>
-                view! { cx, <pre>"One"</pre> }.into_any()
+                view! { <pre>"One"</pre> }.into_any()
             },
             false if value() == 2 => {
                 // returns HtmlElement<P>
-                view! { cx, <p>"Two"</p> }.into_any()
+                view! { <p>"Two"</p> }.into_any()
             }
             // returns HtmlElement<Textarea>
-            _ => view! { cx, <textarea>{value()}</textarea> }.into_any()
+            _ => view! { <textarea>{value()}</textarea> }.into_any()
         }}
     </main>
 }
 ```
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/6-control-flow-in-view-zttwfx?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A2%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A2%7D%5D)
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/6-control-flow-0-5-4yn7qz?file=%2Fsrc%2Fmain.rs%3A1%2C1)
 
-<iframe src="https://codesandbox.io/p/sandbox/6-control-flow-in-view-zttwfx?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A2%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A2%7D%5D" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+<iframe src="https://codesandbox.io/p/sandbox/6-control-flow-0-5-4yn7qz?file=%2Fsrc%2Fmain.rs%3A1%2C1" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use leptos::*;
+
+#[component]
+fn App() -> impl IntoView {
+    let (value, set_value) = create_signal(0);
+    let is_odd = move || value() & 1 == 1;
+    let odd_text = move || if is_odd() { Some("How odd!") } else { None };
+
+    view! {
+        <h1>"Control Flow"</h1>
+
+        // Simple UI to update and show a value
+        <button on:click=move |_| set_value.update(|n| *n += 1)>
+            "+1"
+        </button>
+        <p>"Value is: " {value}</p>
+
+        <hr/>
+
+        <h2><code>"Option<T>"</code></h2>
+        // For any `T` that implements `IntoView`,
+        // so does `Option<T>`
+
+        <p>{odd_text}</p>
+        // This means you can use `Option` methods on it
+        <p>{move || odd_text().map(|text| text.len())}</p>
+
+        <h2>"Conditional Logic"</h2>
+        // You can do dynamic conditional if-then-else
+        // logic in several ways
+        //
+        // a. An "if" expression in a function
+        //    This will simply re-render every time the value
+        //    changes, which makes it good for lightweight UI
+        <p>
+            {move || if is_odd() {
+                "Odd"
+            } else {
+                "Even"
+            }}
+        </p>
+
+        // b. Toggling some kind of class
+        //    This is smart for an element that's going to
+        //    toggled often, because it doesn't destroy
+        //    it in between states
+        //    (you can find the `hidden` class in `index.html`)
+        <p class:hidden=is_odd>"Appears if even."</p>
+
+        // c. The <Show/> component
+        //    This only renders the fallback and the child
+        //    once, lazily, and toggles between them when
+        //    needed. This makes it more efficient in many cases
+        //    than a {move || if ...} block
+        <Show when=is_odd
+            fallback=|| view! { <p>"Even steven"</p> }
+        >
+            <p>"Oddment"</p>
+        </Show>
+
+        // d. Because `bool::then()` converts a `bool` to
+        //    `Option`, you can use it to create a show/hide toggled
+        {move || is_odd().then(|| view! { <p>"Oddity!"</p> })}
+
+        <h2>"Converting between Types"</h2>
+        // e. Note: if branches return different types,
+        //    you can convert between them with
+        //    `.into_any()` (for different HTML element types)
+        //    or `.into_view()` (for all view types)
+        {move || match is_odd() {
+            true if value() == 1 => {
+                // <pre> returns HtmlElement<Pre>
+                view! { <pre>"One"</pre> }.into_any()
+            },
+            false if value() == 2 => {
+                // <p> returns HtmlElement<P>
+                // so we convert into a more generic type
+                view! { <p>"Two"</p> }.into_any()
+            }
+            _ => view! { <textarea>{value()}</textarea> }.into_any()
+        }}
+    }
+}
+
+fn main() {
+    leptos::mount_to_body(App)
+}
+```
+
+</details>
+</preview>

docs/book/src/view/07_errors.md

@@ -10,13 +10,13 @@ Let’s start with a simple component to capture a number input.
 
 ```rust
 #[component]
-fn NumericInput(cx: Scope) -> impl IntoView {
-    let (value, set_value) = create_signal(cx, Ok(0));
+fn NumericInput() -> impl IntoView {
+    let (value, set_value) = create_signal(Ok(0));
 
     // when input changes, try to parse a number from the input
     let on_input = move |ev| set_value(event_target_value(&ev).parse::<i32>());
 
-    view! { cx,
+    view! {
         <label>
             "Type a number (or not!)"
             <input type="number" on:input=on_input/>
@@ -60,27 +60,27 @@ Let’s add an `<ErrorBoundary/>` to this example.
 
 ```rust
 #[component]
-fn NumericInput(cx: Scope) -> impl IntoView {
-    let (value, set_value) = create_signal(cx, Ok(0));
+fn NumericInput() -> impl IntoView {
+    let (value, set_value) = create_signal(Ok(0));
 
     let on_input = move |ev| set_value(event_target_value(&ev).parse::<i32>());
 
-    view! { cx,
+    view! {
         <h1>"Error Handling"</h1>
         <label>
             "Type a number (or something that's not a number!)"
             <input type="number" on:input=on_input/>
             <ErrorBoundary
                 // the fallback receives a signal containing current errors
-                fallback=|cx, errors| view! { cx,
+                fallback=|errors| view! {
                     <div class="error">
                         <p>"Not a number! Errors: "</p>
                         // we can render a list of errors as strings, if we'd like
                         <ul>
                             {move || errors.get()
                                 .into_iter()
-                                .map(|(_, e)| view! { cx, <li>{e.to_string()}</li>})
-                                .collect_view(cx)
+                                .map(|(_, e)| view! { <li>{e.to_string()}</li>})
+                                .collect_view()
                             }
                         </ul>
                     </div>
@@ -110,6 +110,66 @@ Not a number! Errors:
 If you fix the error, the error message will disappear and the content you’re wrapping in
 an `<ErrorBoundary/>` will appear again.
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/7-error-handling-and-error-boundaries-sroncx?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A2%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A2%7D%5D)
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/7-errors-0-5-5mptv9?file=%2Fsrc%2Fmain.rs%3A1%2C1)
 
-<iframe src="https://codesandbox.io/p/sandbox/7-error-handling-and-error-boundaries-sroncx?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A2%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A2%7D%5D" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+<iframe src="https://codesandbox.io/p/sandbox/7-errors-0-5-5mptv9?file=%2Fsrc%2Fmain.rs%3A1%2C1" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use leptos::*;
+
+#[component]
+fn App() -> impl IntoView {
+    let (value, set_value) = create_signal(Ok(0));
+
+    // when input changes, try to parse a number from the input
+    let on_input = move |ev| set_value(event_target_value(&ev).parse::<i32>());
+
+    view! {
+        <h1>"Error Handling"</h1>
+        <label>
+            "Type a number (or something that's not a number!)"
+            <input type="number" on:input=on_input/>
+            // If an `Err(_) had been rendered inside the <ErrorBoundary/>,
+            // the fallback will be displayed. Otherwise, the children of the
+            // <ErrorBoundary/> will be displayed.
+            <ErrorBoundary
+                // the fallback receives a signal containing current errors
+                fallback=|errors| view! {
+                    <div class="error">
+                        <p>"Not a number! Errors: "</p>
+                        // we can render a list of errors
+                        // as strings, if we'd like
+                        <ul>
+                            {move || errors.get()
+                                .into_iter()
+                                .map(|(_, e)| view! { <li>{e.to_string()}</li>})
+                                .collect::<Vec<_>>()
+                            }
+                        </ul>
+                    </div>
+                }
+            >
+                <p>
+                    "You entered "
+                    // because `value` is `Result<i32, _>`,
+                    // it will render the `i32` if it is `Ok`,
+                    // and render nothing and trigger the error boundary
+                    // if it is `Err`. It's a signal, so this will dynamically
+                    // update when `value` changes
+                    <strong>{value}</strong>
+                </p>
+            </ErrorBoundary>
+        </label>
+    }
+}
+
+fn main() {
+    leptos::mount_to_body(App)
+}
+```
+
+</details>
+</preview>

docs/book/src/view/08_parent_child.md

@@ -29,17 +29,17 @@ it in the child. This lets you manipulate the state of the parent from the child
 
 ```rust
 #[component]
-pub fn App(cx: Scope) -> impl IntoView {
-    let (toggled, set_toggled) = create_signal(cx, false);
-    view! { cx,
+pub fn App() -> impl IntoView {
+    let (toggled, set_toggled) = create_signal(false);
+    view! {
         <p>"Toggled? " {toggled}</p>
         <ButtonA setter=set_toggled/>
     }
 }
 
 #[component]
-pub fn ButtonA(cx: Scope, setter: WriteSignal<bool>) -> impl IntoView {
-    view! { cx,
+pub fn ButtonA(setter: WriteSignal<bool>) -> impl IntoView {
+    view! {
         <button
             on:click=move |_| setter.update(|value| *value = !*value)
         >
@@ -62,9 +62,9 @@ Another approach would be to pass a callback to the child: say, `on_click`.
 
 ```rust
 #[component]
-pub fn App(cx: Scope) -> impl IntoView {
-    let (toggled, set_toggled) = create_signal(cx, false);
-    view! { cx,
+pub fn App() -> impl IntoView {
+    let (toggled, set_toggled) = create_signal(false);
+    view! {
         <p>"Toggled? " {toggled}</p>
         <ButtonB on_click=move |_| set_toggled.update(|value| *value = !*value)/>
     }
@@ -72,14 +72,9 @@ pub fn App(cx: Scope) -> impl IntoView {
 
 
 #[component]
-pub fn ButtonB<F>(
-    cx: Scope,
-    on_click: F,
-) -> impl IntoView
-where
-    F: Fn(MouseEvent) + 'static,
+pub fn ButtonB(#[prop(into)] on_click: Callback<MouseEvent>) -> impl IntoView
 {
-    view! { cx,
+    view! {
         <button on:click=on_click>
             "Toggle"
         </button>
@@ -93,10 +88,49 @@ of keeping local state local, preventing the problem of spaghetti mutation. But
 the logic to mutate that signal needs to exist up in `<App/>`, not down in `<ButtonB/>`. These
 are real trade-offs, not a simple right-or-wrong choice.
 
+> Note the way we use the `Callback<In, Out>` type. This is basically a
+> wrapper around a closure `Fn(In) -> Out` that is also `Copy` and makes it
+> easy to pass around.
+> 
+> We also used the `#[prop(into)]` attribute so we can pass a normal closure into
+> `on_click`. Please see the [chapter "`into` Props"](./03_components.md#into-props) for more details.
+
+### 2.1 Use Closure instead of `Callback`
+
+You can use a Rust closure `Fn(MouseEvent)` directly instead of `Callback`:
+
+```rust
+#[component]
+pub fn App() -> impl IntoView {
+    let (toggled, set_toggled) = create_signal(false);
+    view! {
+        <p>"Toggled? " {toggled}</p>
+        <ButtonB on_click=move |_| set_toggled.update(|value| *value = !*value)/>
+    }
+}
+
+
+#[component]
+pub fn ButtonB<F>(on_click: F) -> impl IntoView
+where
+    F: Fn(MouseEvent) + 'static
+{
+    view! {
+        <button on:click=on_click>
+            "Toggle"
+        </button>
+    }
+}
+```
+
+The code is very similar in this case. On more advanced use-cases using a
+closure might require some cloning compared to using a `Callback`.
+
 > Note the way we declare the generic type `F` here for the callback. If you’re
 > confused, look back at the [generic props](./03_components.html#generic-props) section
 > of the chapter on components.
 
+
 ## 3. Use an Event Listener
 
 You can actually write Option 2 in a slightly different way. If the callback maps directly onto
@@ -105,9 +139,9 @@ in your `view` macro in `<App/>`.
 
 ```rust
 #[component]
-pub fn App(cx: Scope) -> impl IntoView {
-    let (toggled, set_toggled) = create_signal(cx, false);
-    view! { cx,
+pub fn App() -> impl IntoView {
+    let (toggled, set_toggled) = create_signal(false);
+    view! {
         <p>"Toggled? " {toggled}</p>
         // note the on:click instead of on_click
         // this is the same syntax as an HTML element event listener
@@ -117,8 +151,8 @@ pub fn App(cx: Scope) -> impl IntoView {
 
 
 #[component]
-pub fn ButtonC<F>(cx: Scope) -> impl IntoView {
-    view! { cx,
+pub fn ButtonC<F>() -> impl IntoView {
+    view! {
         <button>"Toggle"</button>
     }
 }
@@ -141,17 +175,17 @@ tree:
 
 ```rust
 #[component]
-pub fn App(cx: Scope) -> impl IntoView {
-    let (toggled, set_toggled) = create_signal(cx, false);
-    view! { cx,
+pub fn App() -> impl IntoView {
+    let (toggled, set_toggled) = create_signal(false);
+    view! {
         <p>"Toggled? " {toggled}</p>
         <Layout/>
     }
 }
 
 #[component]
-pub fn Layout(cx: Scope) -> impl IntoView {
-    view! { cx,
+pub fn Layout() -> impl IntoView {
+    view! {
         <header>
             <h1>"My Page"</h1>
         </header>
@@ -162,8 +196,8 @@ pub fn Layout(cx: Scope) -> impl IntoView {
 }
 
 #[component]
-pub fn Content(cx: Scope) -> impl IntoView {
-    view! { cx,
+pub fn Content() -> impl IntoView {
+    view! {
         <div class="content">
             <ButtonD/>
         </div>
@@ -171,7 +205,7 @@ pub fn Content(cx: Scope) -> impl IntoView {
 }
 
 #[component]
-pub fn ButtonD<F>(cx: Scope) -> impl IntoView {
+pub fn ButtonD<F>() -> impl IntoView {
     todo!()
 }
 ```
@@ -182,17 +216,17 @@ pass your `WriteSignal` to its props. You could do what’s sometimes called
 
 ```rust
 #[component]
-pub fn App(cx: Scope) -> impl IntoView {
-    let (toggled, set_toggled) = create_signal(cx, false);
-    view! { cx,
+pub fn App() -> impl IntoView {
+    let (toggled, set_toggled) = create_signal(false);
+    view! {
         <p>"Toggled? " {toggled}</p>
         <Layout set_toggled/>
     }
 }
 
 #[component]
-pub fn Layout(cx: Scope, set_toggled: WriteSignal<bool>) -> impl IntoView {
-    view! { cx,
+pub fn Layout(set_toggled: WriteSignal<bool>) -> impl IntoView {
+    view! {
         <header>
             <h1>"My Page"</h1>
         </header>
@@ -203,8 +237,8 @@ pub fn Layout(cx: Scope, set_toggled: WriteSignal<bool>) -> impl IntoView {
 }
 
 #[component]
-pub fn Content(cx: Scope, set_toggled: WriteSignal<bool>) -> impl IntoView {
-    view! { cx,
+pub fn Content(set_toggled: WriteSignal<bool>) -> impl IntoView {
+    view! {
         <div class="content">
             <ButtonD set_toggled/>
         </div>
@@ -212,7 +246,7 @@ pub fn Content(cx: Scope, set_toggled: WriteSignal<bool>) -> impl IntoView {
 }
 
 #[component]
-pub fn ButtonD<F>(cx: Scope, set_toggled: WriteSignal<bool>) -> impl IntoView {
+pub fn ButtonD<F>(set_toggled: WriteSignal<bool>) -> impl IntoView {
     todo!()
 }
 ```
@@ -237,13 +271,13 @@ unnecessary prop drilling.
 
 ```rust
 #[component]
-pub fn App(cx: Scope) -> impl IntoView {
-    let (toggled, set_toggled) = create_signal(cx, false);
+pub fn App() -> impl IntoView {
+    let (toggled, set_toggled) = create_signal(false);
 
     // share `set_toggled` with all children of this component
-    provide_context(cx, set_toggled);
+    provide_context(set_toggled);
 
-    view! { cx,
+    view! {
         <p>"Toggled? " {toggled}</p>
         <Layout/>
     }
@@ -252,14 +286,14 @@ pub fn App(cx: Scope) -> impl IntoView {
 // <Layout/> and <Content/> omitted
 
 #[component]
-pub fn ButtonD(cx: Scope) -> impl IntoView {
+pub fn ButtonD() -> impl IntoView {
     // use_context searches up the context tree, hoping to
     // find a `WriteSignal<bool>`
     // in this case, I .expect() because I know I provided it
-    let setter = use_context::<WriteSignal<bool>>(cx)
+    let setter = use_context::<WriteSignal<bool>>()
         .expect("to have found the setter provided");
 
-    view! { cx,
+    view! {
         <button
             on:click=move |_| setter.update(|value| *value = !*value)
         >
@@ -285,6 +319,145 @@ in `<ButtonD/>` and a single text node in `<App/>`. It’s as if the components
 themselves don’t exist at all. And, well... at runtime, they don’t. It’s just
 signals and effects, all the way down.
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/8-parent-child-communication-84we8m?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A3%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A3%7D%5D)
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/8-parent-child-0-5-7rz7qd?file=%2Fsrc%2Fmain.rs%3A1%2C2)
 
-<iframe src="https://codesandbox.io/p/sandbox/8-parent-child-communication-84we8m?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A1%2C%22endLineNumber%22%3A3%2C%22startColumn%22%3A1%2C%22startLineNumber%22%3A3%7D%5D" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+<iframe src="https://codesandbox.io/p/sandbox/8-parent-child-0-5-7rz7qd?file=%2Fsrc%2Fmain.rs%3A1%2C2" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use leptos::{ev::MouseEvent, *};
+
+// This highlights four different ways that child components can communicate
+// with their parent:
+// 1) <ButtonA/>: passing a WriteSignal as one of the child component props,
+//    for the child component to write into and the parent to read
+// 2) <ButtonB/>: passing a closure as one of the child component props, for
+//    the child component to call
+// 3) <ButtonC/>: adding an `on:` event listener to a component
+// 4) <ButtonD/>: providing a context that is used in the component (rather than prop drilling)
+
+#[derive(Copy, Clone)]
+struct SmallcapsContext(WriteSignal<bool>);
+
+#[component]
+pub fn App() -> impl IntoView {
+    // just some signals to toggle three classes on our <p>
+    let (red, set_red) = create_signal(false);
+    let (right, set_right) = create_signal(false);
+    let (italics, set_italics) = create_signal(false);
+    let (smallcaps, set_smallcaps) = create_signal(false);
+
+    // the newtype pattern isn't *necessary* here but is a good practice
+    // it avoids confusion with other possible future `WriteSignal<bool>` contexts
+    // and makes it easier to refer to it in ButtonC
+    provide_context(SmallcapsContext(set_smallcaps));
+
+    view! {
+        <main>
+            <p
+                // class: attributes take F: Fn() => bool, and these signals all implement Fn()
+                class:red=red
+                class:right=right
+                class:italics=italics
+                class:smallcaps=smallcaps
+            >
+                "Lorem ipsum sit dolor amet."
+            </p>
+
+            // Button A: pass the signal setter
+            <ButtonA setter=set_red/>
+
+            // Button B: pass a closure
+            <ButtonB on_click=move |_| set_right.update(|value| *value = !*value)/>
+
+            // Button B: use a regular event listener
+            // setting an event listener on a component like this applies it
+            // to each of the top-level elements the component returns
+            <ButtonC on:click=move |_| set_italics.update(|value| *value = !*value)/>
+
+            // Button D gets its setter from context rather than props
+            <ButtonD/>
+        </main>
+    }
+}
+
+/// Button A receives a signal setter and updates the signal itself
+#[component]
+pub fn ButtonA(
+    /// Signal that will be toggled when the button is clicked.
+    setter: WriteSignal<bool>,
+) -> impl IntoView {
+    view! {
+        <button
+            on:click=move |_| setter.update(|value| *value = !*value)
+        >
+            "Toggle Red"
+        </button>
+    }
+}
+
+/// Button B receives a closure
+#[component]
+pub fn ButtonB<F>(
+    /// Callback that will be invoked when the button is clicked.
+    on_click: F,
+) -> impl IntoView
+where
+    F: Fn(MouseEvent) + 'static,
+{
+    view! {
+        <button
+            on:click=on_click
+        >
+            "Toggle Right"
+        </button>
+    }
+
+    // just a note: in an ordinary function ButtonB could take on_click: impl Fn(MouseEvent) + 'static
+    // and save you from typing out the generic
+    // the component macro actually expands to define a
+    //
+    // struct ButtonBProps<F> where F: Fn(MouseEvent) + 'static {
+    //   on_click: F
+    // }
+    //
+    // this is what allows us to have named props in our component invocation,
+    // instead of an ordered list of function arguments
+    // if Rust ever had named function arguments we could drop this requirement
+}
+
+/// Button C is a dummy: it renders a button but doesn't handle
+/// its click. Instead, the parent component adds an event listener.
+#[component]
+pub fn ButtonC() -> impl IntoView {
+    view! {
+        <button>
+            "Toggle Italics"
+        </button>
+    }
+}
+
+/// Button D is very similar to Button A, but instead of passing the setter as a prop
+/// we get it from the context
+#[component]
+pub fn ButtonD() -> impl IntoView {
+    let setter = use_context::<SmallcapsContext>().unwrap().0;
+
+    view! {
+        <button
+            on:click=move |_| setter.update(|value| *value = !*value)
+        >
+            "Toggle Small Caps"
+        </button>
+    }
+}
+
+fn main() {
+    leptos::mount_to_body(App)
+}
+```
+
+</details>
+</preview>

docs/book/src/view/09_component_children.md

@@ -5,7 +5,7 @@ children into an HTML element. For example, imagine I have a `<FancyForm/>` comp
 that enhances an HTML `<form>`. I need some way to pass all its inputs.
 
 ```rust
-view! { cx,
+view! {
     <Form>
         <fieldset>
             <label>
@@ -28,12 +28,12 @@ other components:
 In fact, you’ve already seen these both in action in the [`<Show/>`](/view/06_control_flow.html#show) component:
 
 ```rust
-view! { cx,
+view! {
   <Show
     // `when` is a normal prop
     when=move || value() > 5
     // `fallback` is a "render prop": a function that returns a view
-    fallback=|cx| view! { cx, <Small/> }
+    fallback=|| view! { <Small/> }
   >
     // `<Big/>` (and anything else here)
     // will be given to the `children` prop
@@ -47,7 +47,6 @@ Let’s define a component that takes some children and a render prop.
 ```rust
 #[component]
 pub fn TakesChildren<F, IV>(
-    cx: Scope,
     /// Takes a function (type F) that returns anything that can be
     /// converted into a View (type IV)
     render_prop: F,
@@ -58,19 +57,19 @@ where
     F: Fn() -> IV,
     IV: IntoView,
 {
-    view! { cx,
+    view! {
         <h2>"Render Prop"</h2>
         {render_prop()}
 
         <h2>"Children"</h2>
-        {children(cx)}
+        {children()}
     }
 }
 ```
 
 `render_prop` and `children` are both functions, so we can call them to generate
 the appropriate views. `children`, in particular, is an alias for
-`Box<dyn FnOnce(Scope) -> Fragment>`. (Aren't you glad we named it `Children` instead?)
+`Box<dyn FnOnce() -> Fragment>`. (Aren't you glad we named it `Children` instead?)
 
 > If you need a `Fn` or `FnMut` here because you need to call `children` more than once,
 > we also provide `ChildrenFn` and `ChildrenMut` aliases.
@@ -78,8 +77,8 @@ the appropriate views. `children`, in particular, is an alias for
 We can use the component like this:
 
 ```rust
-view! { cx,
-    <TakesChildren render_prop=|| view! { cx, <p>"Hi, there!"</p> }>
+view! {
+    <TakesChildren render_prop=|| view! { <p>"Hi, there!"</p> }>
         // these get passed to `children`
         "Some text"
         <span>"A span"</span>
@@ -97,15 +96,15 @@ a component that takes its children and turns them into an unordered list.
 
 ```rust
 #[component]
-pub fn WrapsChildren(cx: Scope, children: Children) -> impl IntoView {
+pub fn WrapsChildren(children: Children) -> impl IntoView {
     // Fragment has `nodes` field that contains a Vec<View>
-    let children = children(cx)
+    let children = children()
         .nodes
         .into_iter()
-        .map(|child| view! { cx, <li>{child}</li> })
-        .collect_view(cx);
+        .map(|child| view! { <li>{child}</li> })
+        .collect_view();
 
-    view! { cx,
+    view! {
         <ul>{children}</ul>
     }
 }
@@ -114,15 +113,117 @@ pub fn WrapsChildren(cx: Scope, children: Children) -> impl IntoView {
 Calling it like this will create a list:
 
 ```rust
-view! { cx,
-    <WrappedChildren>
+view! {
+    <WrapsChildren>
         "A"
         "B"
         "C"
-    </WrappedChildren>
+    </WrapsChildren>
 }
 ```
 
-[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/9-component-children-2wrdfd?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A12%2C%22endLineNumber%22%3A19%2C%22startColumn%22%3A12%2C%22startLineNumber%22%3A19%7D%5D)
+[Click to open CodeSandbox.](https://codesandbox.io/p/sandbox/9-component-children-0-5-m4jwhp?file=%2Fsrc%2Fmain.rs%3A1%2C1)
 
-<iframe src="https://codesandbox.io/p/sandbox/9-component-children-2wrdfd?file=%2Fsrc%2Fmain.rs&selection=%5B%7B%22endColumn%22%3A12%2C%22endLineNumber%22%3A19%2C%22startColumn%22%3A12%2C%22startLineNumber%22%3A19%7D%5D" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+<iframe src="https://codesandbox.io/p/sandbox/9-component-children-0-5-m4jwhp?file=%2Fsrc%2Fmain.rs%3A1%2C1" width="100%" height="1000px" style="max-height: 100vh"></iframe>
+
+<details>
+<summary>CodeSandbox Source</summary>
+
+```rust
+use leptos::*;
+
+// Often, you want to pass some kind of child view to another
+// component. There are two basic patterns for doing this:
+// - "render props": creating a component prop that takes a function
+//   that creates a view
+// - the `children` prop: a special property that contains content
+//   passed as the children of a component in your view, not as a
+//   property
+
+#[component]
+pub fn App() -> impl IntoView {
+    let (items, set_items) = create_signal(vec![0, 1, 2]);
+    let render_prop = move || {
+        // items.with(...) reacts to the value without cloning
+        // by applying a function. Here, we pass the `len` method
+        // on a `Vec<_>` directly
+        let len = move || items.with(Vec::len);
+        view! {
+            <p>"Length: " {len}</p>
+        }
+    };
+
+    view! {
+        // This component just displays the two kinds of children,
+        // embedding them in some other markup
+        <TakesChildren
+            // for component props, you can shorthand
+            // `render_prop=render_prop` => `render_prop`
+            // (this doesn't work for HTML element attributes)
+            render_prop
+        >
+            // these look just like the children of an HTML element
+            <p>"Here's a child."</p>
+            <p>"Here's another child."</p>
+        </TakesChildren>
+        <hr/>
+        // This component actually iterates over and wraps the children
+        <WrapsChildren>
+            <p>"Here's a child."</p>
+            <p>"Here's another child."</p>
+        </WrapsChildren>
+    }
+}
+
+/// Displays a `render_prop` and some children within markup.
+#[component]
+pub fn TakesChildren<F, IV>(
+    /// Takes a function (type F) that returns anything that can be
+    /// converted into a View (type IV)
+    render_prop: F,
+    /// `children` takes the `Children` type
+    /// this is an alias for `Box<dyn FnOnce() -> Fragment>`
+    /// ... aren't you glad we named it `Children` instead?
+    children: Children,
+) -> impl IntoView
+where
+    F: Fn() -> IV,
+    IV: IntoView,
+{
+    view! {
+        <h1><code>"<TakesChildren/>"</code></h1>
+        <h2>"Render Prop"</h2>
+        {render_prop()}
+        <hr/>
+        <h2>"Children"</h2>
+        {children()}
+    }
+}
+
+/// Wraps each child in an `<li>` and embeds them in a `<ul>`.
+#[component]
+pub fn WrapsChildren(children: Children) -> impl IntoView {
+    // children() returns a `Fragment`, which has a
+    // `nodes` field that contains a Vec<View>
+    // this means we can iterate over the children
+    // to create something new!
+    let children = children()
+        .nodes
+        .into_iter()
+        .map(|child| view! { <li>{child}</li> })
+        .collect::<Vec<_>>();
+
+    view! {
+        <h1><code>"<WrapsChildren/>"</code></h1>
+        // wrap our wrapped children in a UL
+        <ul>{children}</ul>
+    }
+}
+
+fn main() {
+    leptos::mount_to_body(App)
+}
+```
+
+</details>
+</preview>

docs/book/src/view/builder.md

@@ -0,0 +1,98 @@
+# No Macros: The View Builder Syntax
+
+> If you’re perfectly happy with the `view!` macro syntax described so far, you’re welcome to skip this chapter. The builder syntax described in this section is always available, but never required.
+
+For one reason or another, many developers would prefer to avoid macros. Perhaps you don’t like the limited `rustfmt` support. (Although, you should check out [`leptosfmt`](https://github.com/bram209/leptosfmt), which is an excellent tool!) Perhaps you worry about the effect of macros on compile time. Perhaps you prefer the aesthetics of pure Rust syntax, or you have trouble context-switching between an HTML-like syntax and your Rust code. Or perhaps you want more flexibility in how you create and manipulate HTML elements than the `view` macro provides.
+
+If you fall into any of those camps, the builder syntax may be for you.
+
+The `view` macro expands an HTML-like syntax to a series of Rust functions and method calls. If you’d rather not use the `view` macro, you can simply use that expanded syntax yourself. And it’s actually pretty nice!
+
+First off, if you want you can even drop the `#[component]` macro: a component is just a setup function that creates your view, so you can define a component as a simple function call:
+
+```rust
+pub fn counter(initial_value: i32, step: u32) -> impl IntoView { }
+```
+
+Elements are created by calling a function with the same name as the HTML element:
+
+```rust
+p()
+```
+
+You can add children to the element with [`.child()`](https://docs.rs/leptos/latest/leptos/struct.HtmlElement.html#method.child), which takes a single child or a tuple or array of types that implement [`IntoView`](https://docs.rs/leptos/latest/leptos/trait.IntoView.html).
+
+```rust
+p().child((em().child("Big, "), strong().child("bold "), "text"))
+```
+
+Attributes are added with [`.attr()`](https://docs.rs/leptos/latest/leptos/struct.HtmlElement.html#method.attr). This can take any of the same types that you could pass as an attribute into the view macro (types that implement [`IntoAttribute`](https://docs.rs/leptos/latest/leptos/trait.IntoAttribute.html)).
+
+```rust
+p().attr("id", "foo").attr("data-count", move || count().to_string())
+```
+
+Similarly, the `class:`, `prop:`, and `style:` syntaxes map directly onto [`.class()`](https://docs.rs/leptos/latest/leptos/struct.HtmlElement.html#method.class), [`.prop()`](https://docs.rs/leptos/latest/leptos/struct.HtmlElement.html#method.prop), and [`.style()`](https://docs.rs/leptos/latest/leptos/struct.HtmlElement.html#method.style) methods.
+
+Event listeners can be added with [`.on()`](https://docs.rs/leptos/latest/leptos/struct.HtmlElement.html#method.on). Typed events found in [`leptos::ev`](https://docs.rs/leptos/latest/leptos/ev/index.html) prevent typos in event names and allow for correct type inference in the callback function.
+
+```rust
+button()
+    .on(ev::click, move |_| set_count.update(|count| count.clear()))
+    .child("Clear")
+```
+
+> Many additional methods can be found in the [`HtmlElement`](https://docs.rs/leptos/latest/leptos/struct.HtmlElement.html#method.child) docs, including some methods that are not directly available in the `view` macro.
+
+All of this adds up to a very Rusty syntax to build full-featured views, if you prefer this style.
+
+```rust
+/// A simple counter view.
+// A component is really just a function call: it runs once to create the DOM and reactive system
+pub fn counter(initial_value: i32, step: u32) -> impl IntoView {
+    let (count, set_count) = create_signal(0);
+
+    div()
+        .child((
+            button()
+                // typed events found in leptos::ev
+                // 1) prevent typos in event names
+                // 2) allow for correct type inference in callbacks
+                .on(ev::click, move |_| set_count.update(|count| count.clear()))
+                .child("Clear"),
+            button()
+                .on(ev::click, move |_| {
+                    set_count.update(|count| count.decrease())
+                })
+                .child("-1"),
+            span().child(("Value: ", move || count.get().value(), "!")),
+            button()
+                .on(ev::click, move |_| {
+                    set_count.update(|count| count.increase())
+                })
+                .child("+1"),
+        ))
+}
+```
+
+This also has the benefit of being more flexible: because these are all plain Rust functions and methods, it’s easier to use them in things like iterator adapters without any additional “magic”:
+
+```rust
+// take some set of attribute names and values
+let attrs: Vec<(&str, AttributeValue)> = todo!();
+// you can use the builder syntax to “spread” these onto the
+// element in a way that’s not possible with the view macro
+let p = attrs
+    .into_iter()
+    .fold(p(), |el, (name, value)| el.attr(name, value));
+
+```
+
+> ## Performance Note
+>
+> One caveat: the `view` macro applies significant optimizations in server-side-rendering (SSR) mode to improve HTML rendering performance significantly (think 2-4x faster, depending on the characteristics of any given app). It does this by analyzing your `view` at compile time and converting the static parts into simple HTML strings, rather than expanding them into the builder syntax.
+>
+> This means two things:
+>
+> 1. The builder syntax and `view` macro should not be mixed, or should only be mixed very carefully: at least in SSR mode, the output of the `view` should be treated as a “black box” that can’t have additional builder methods applied to it without causing inconsistencies.
+> 2. Using the builder syntax will result in less-than-optimal SSR performance. It won’t be slow, by any means (and it’s worth running your own benchmarks in any case), just slower than the `view`-optimized version.

examples/Makefile.toml

@@ -5,26 +5,149 @@ CARGO_MAKE_EXTEND_WORKSPACE_MAKEFILE = true
 CARGO_MAKE_CARGO_BUILD_TEST_FLAGS = ""
 CARGO_MAKE_WORKSPACE_EMULATION = true
 CARGO_MAKE_CRATE_WORKSPACE_MEMBERS = [
-    "counter",
-    "counter_isomorphic",
-    "counters",
-    "counters_stable",
-    "counter_without_macros",
-    "error_boundary",
-    "errors_axum",
-    "fetch",
-    "hackernews",
-    "hackernews_axum",
-    "login_with_token_csr_only",
-    "parent_child",
-    "router",
-    "session_auth_axum",
-    "ssr_modes",
-    "ssr_modes_axum",
-    "tailwind",
-    "tailwind_csr_trunk",
-    "todo_app_sqlite",
-    "todo_app_sqlite_axum",
-    "todo_app_sqlite_viz",
-    "todomvc",
+  "animated_show",
+  "counter",
+  "counter_isomorphic",
+  "counters",
+  "counters_stable",
+  "counter_url_query",
+  "counter_without_macros",
+  "error_boundary",
+  "errors_axum",
+  "fetch",
+  "hackernews",
+  "hackernews_axum",
+  "js-framework-benchmark",
+  "login_with_token_csr_only",
+  "parent_child",
+  "router",
+  "session_auth_axum",
+  "slots",
+  "ssr_modes",
+  "ssr_modes_axum",
+  "suspense_tests",
+  "tailwind_actix",
+  "tailwind_csr",
+  "tailwind_axum",
+  "timer",
+  "todo_app_sqlite",
+  "todo_app_sqlite_axum",
+  "todo_app_sqlite_viz",
+  "todomvc",
 ]
+
+[tasks.gen-members]
+workspace = false
+description = "Generate the list of workspace members"
+script = '''
+examples=$(ls | 
+grep -v .md | 
+grep -v Makefile.toml | 
+grep -v cargo-make | 
+grep -v gtk | 
+jq -R -s -c 'split("\n")[:-1]')
+echo "CARGO_MAKE_CRATE_WORKSPACE_MEMBERS = $examples"
+'''
+
+[tasks.test-report]
+workspace = false
+description = "report web testing technology used by examples - OPTION: [all]"
+script = '''
+set -emu
+
+BOLD="\e[1m"
+GREEN="\e[0;32m"
+ITALIC="\e[3m"
+YELLOW="\e[0;33m"
+RESET="\e[0m"
+
+echo
+echo "${YELLOW}Web Test Technology${RESET}"
+echo
+
+makefile_paths=$(find . -name Makefile.toml -not -path '*/target/*' -not -path '*/node_modules/*' |
+  sed 's%./%%' |
+  sed 's%/Makefile.toml%%' |
+  grep -v Makefile.toml |
+  sort -u)
+
+start_path=$(pwd)
+
+for path in $makefile_paths; do
+  cd $path
+
+  crate_symbols=
+
+  pw_count=$(find . -name playwright.config.ts | wc -l)
+
+  while read -r line; do
+      case $line in
+      *"cucumber"*)
+          crate_symbols=$crate_symbols"C"
+          ;;
+      *"fantoccini"*)
+          crate_symbols=$crate_symbols"D"
+          ;;
+      esac
+  done <"./Cargo.toml"
+
+  while read -r line; do
+    case $line in
+      *"cargo-make/wasm-test.toml"*)
+          crate_symbols=$crate_symbols"W"
+        ;;
+      *"cargo-make/playwright-test.toml"*)
+          crate_symbols=$crate_symbols"P"
+          crate_symbols=$crate_symbols"N"
+        ;;
+      *"cargo-make/playwright-trunk-test.toml"*)
+          crate_symbols=$crate_symbols"P"
+          crate_symbols=$crate_symbols"T"
+        ;;
+      *"cargo-make/trunk_server.toml"*)
+          crate_symbols=$crate_symbols"T"
+        ;;
+      *"cargo-make/cargo-leptos-webdriver-test.toml"*)
+          crate_symbols=$crate_symbols"L"
+        ;;
+      *"cargo-make/cargo-leptos-test.toml"*)
+          crate_symbols=$crate_symbols"L"
+          if [ $pw_count -gt 0 ]; then
+            crate_symbols=$crate_symbols"P"
+          fi
+        ;;
+    esac
+  done <"./Makefile.toml"
+
+  # Sort list of tools
+  sorted_crate_symbols=$(echo ${crate_symbols} | grep -o . | sort | tr -d "\n") 
+
+  formatted_crate_symbols=" ➤ ${BOLD}${YELLOW}${sorted_crate_symbols}${RESET}"
+  crate_line=$path
+  if [ ! -z ${1+x} ]; then
+    # Show all examples
+    if [ ! -z $crate_symbols ]; then
+      crate_line=$crate_line$formatted_crate_symbols
+    fi
+    echo $crate_line
+  elif [ ! -z $crate_symbols ]; then
+    # Filter out examples that do not run tests in `ci`
+    crate_line=$crate_line$formatted_crate_symbols
+    echo $crate_line
+  fi
+
+  cd ${start_path}
+done
+
+c="${BOLD}${YELLOW}C${RESET} = Cucumber"
+d="${BOLD}${YELLOW}D${RESET} = WebDriver"
+l="${BOLD}${YELLOW}L${RESET} = Cargo Leptos"
+n="${BOLD}${YELLOW}N${RESET} = Node"
+p="${BOLD}${YELLOW}P${RESET} = Playwright"
+t="${BOLD}${YELLOW}T${RESET} = Trunk"
+w="${BOLD}${YELLOW}W${RESET} = WASM"
+
+echo
+echo "${ITALIC}Keys:${RESET} $c, $d, $l, $n, $p, $t, $w"
+echo
+'''

examples/README.md

@@ -1,7 +1,47 @@
-# Examples
+# Examples README
+
+## Main Branch
 
 The examples in this directory are all built and tested against the current `main` branch.
 
-To the extent that new features have been released or breaking changes have been made since the previous release, the examples are compatible with the `main` branch and not the current release.
+To the extent that new features have been released or breaking changes have been made since the previous release, the examples are compatible with the `main` branch but not the current release.
 
-To see the examples as they were at the time of the `0.3.0` release, [click here](https://github.com/leptos-rs/leptos/tree/v0.3.0/examples).
+To see the examples as they were at the time of the `0.5.0` release, [click here](https://github.com/leptos-rs/leptos/tree/v0.5.0/examples).
+
+## Cargo Make
+
+[Cargo Make](https://sagiegurari.github.io/cargo-make/) is used to build, test, and run examples.
+
+Here are the highlights.
+
+- Extendable custom task files are located in the [cargo-make](./cargo-make/) directory
+- Running a task will automatically install `cargo` dependencies 
+- Each `Makefile.toml` file must extend the [cargo-make/main.toml](./cargo-make/main.toml) file
+- [cargo-make](./cargo-make/) files that end in `*-test.toml` configure web testing strategies
+- Run `cargo make test-report` to learn which examples have web tests
+
+## Getting Started
+
+Follow these steps to get any example up and running.
+
+1. `cd` to the example root directory
+2. Run `cargo make ci` to setup and test the example
+3. Run `cargo make start` to run the example
+4. Open the client URL in the console output (<http://127.0.0.1:8080> or <http://127.0.0.1:3000> by default)
+
+## Prerequisites
+
+Example projects depend on the following tools. Please install them as needed.
+
+- [Rust](https://www.rust-lang.org/)
+- Nightly Rust
+  - Run `rustup toolchain install nightly`
+  - Run `rustup target add wasm32-unknown-unknown`
+- [Cargo Make](https://sagiegurari.github.io/cargo-make/)
+  - Run `cargo install --force cargo-make`
+  - Setup a command alias like `alias cm='cargo make'` to reduce typing (**_Optional_**)
+- [Trunk](https://github.com/thedodd/trunk)
+  - Run `cargo install trunk`
+- [Node Version Manager](https://github.com/nvm-sh/nvm/) (**_Optional_**)
+- [Node.js](https://nodejs.org/)
+- [pnpm](https://pnpm.io/) (**_Optional_**)

examples/SSR_NOTES.md

@@ -0,0 +1,68 @@
+# Server Side Rendering
+
+## Cargo Leptos
+
+cargo-leptos is now the easiest and most featureful way to build server side rendered apps with hydration. It provides automatic recompilation of client and server code, wasm optimisation, CSS minification, and more! Check out more about it [here](https://github.com/akesson/cargo-leptos)
+
+1. Install cargo-leptos
+
+```bash
+cargo install --locked cargo-leptos
+```
+
+2. Build the site in watch mode, recompiling on file changes
+
+```bash
+cargo leptos watch
+```
+
+Open browser on [http://localhost:3000/](http://localhost:3000/)
+
+3. When ready to deploy, run
+
+```bash
+cargo leptos build --release
+```
+
+## WASM Pack
+
+To run it as a server side app with hydration, you'll need to have wasm-pack installed.
+
+0. Edit the `[package.metadata.leptos]` section and set `site-root` to `"."`. For examples with CSS you also want to change the path of the `<StyleSheet / >` component in the root component to point towards the CSS file in the root. This tells leptos that the WASM/JS files generated by wasm-pack are available at `./pkg` and that the CSS files are no longer processed by cargo-leptos. Building to alternative folders is not supported at this time. You'll also want to edit the call to `get_configuration()` to pass in `Some(Cargo.toml)`, so that Leptos will read the settings instead of cargo-leptos. If you do so, your file/folder names cannot include dashes.
+
+1. Install wasm-pack
+
+```bash
+cargo install wasm-pack
+```
+
+2. Build the Webassembly used to hydrate the HTML from the server
+
+```bash
+wasm-pack build --target=web --debug --no-default-features --features=hydrate
+```
+
+3. Run the server to serve the Webassembly, JS, and HTML
+
+```bash
+cargo run --no-default-features --features=ssr
+```
+
+### Server Side Rendering With Hydration
+
+To run it as a server side app with hydration, first you should run
+
+```bash
+wasm-pack build --target=web --debug --no-default-features --features=hydrate
+```
+
+to generate the WebAssembly to hydrate the HTML delivered from the server.
+
+Then run the server with `cargo run` to serve the server side rendered HTML and the WASM bundle for hydration.
+
+```bash
+cargo run --no-default-features --features=ssr
+```
+
+> Note that if your hydration code changes, you will have to rerun the wasm-pack command above before running
+> `cargo run`

examples/animated_show/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "animated-show"
+version = "0.1.0"
+edition = "2021"
+
+[profile.release]
+codegen-units = 1
+lto = true
+
+[dependencies]
+leptos = { path = "../../leptos", features = ["csr"] }
+console_log = "1"
+log = "0.4"
+console_error_panic_hook = "0.1.7"

examples/animated_show/Makefile.toml

@@ -0,0 +1,4 @@
+extend = [
+    { path = "../cargo-make/main.toml" },
+    { path = "../cargo-make/trunk_server.toml" },
+]

examples/animated_show/README.md

@@ -0,0 +1,10 @@
+# Animated Show Example
+
+This is a very simple example of the `<AnimatedShow>` component.
+
+The `<AnimatedShow>` component is an extension for the `<Show>` component and it will not take in a fallback, but it will unmount the component from the DOM after a given duration. This makes it possible to have really easy unmount animations with just
+CSS.
+
+## Getting Started
+
+See the [Examples README](../README.md) for setup and run instructions.

examples/animated_show/index.html

@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<html>
+	<head>
+		<link data-trunk rel="rust" data-wasm-opt="z"/>
+		<link data-trunk rel="icon" type="image/ico" href="/public/favicon.ico"/>
+		<style>
+			.hover-me {
+				width: 100px;
+				margin: 1rem;
+				padding: 1rem;
+				text-align: center;
+				cursor: pointer;
+				border: 1px solid grey;
+			}
+			.here-i-am {
+				width: 100px;
+				margin: 1rem;
+				padding: 1rem;
+				text-align: center;
+				color: white;
+				font-weight: bold;
+				background: black;
+			}
+
+			@keyframes fade-in {
+				from { opacity: 0; }
+				to { opacity: 1; }
+			}
+			@keyframes fade-out {
+				from { opacity: 1; }
+				to { opacity: 0; }
+			}
+			.fade-in-1000 {
+				animation: 1000ms fade-in forwards;
+			}
+			.fade-out-1000 {
+				animation: 1000ms fade-out forwards;
+			}
+		</style>
+	</head>
+	<body></body>
+</html>

examples/animated_show/src/lib.rs

@@ -0,0 +1,34 @@
+use core::time::Duration;
+use leptos::*;
+
+#[component]
+pub fn App() -> impl IntoView {
+    let show = create_rw_signal(false);
+
+    // the CSS classes in this example are just written directly inside the `index.html`
+    view! {
+        <div
+            class="hover-me"
+            on:mouseenter=move |_| show.set(true)
+            on:mouseleave=move |_| show.set(false)
+        >
+            "Hover Me"
+        </div>
+
+        <AnimatedShow
+            when=show
+            // optional CSS class which will be applied if `when == true`
+            show_class="fade-in-1000"
+            // optional CSS class which will be applied if `when == false` and before the
+            // `hide_delay` starts -> makes CSS unmount animations really easy
+            hide_class="fade-out-1000"
+            // the given unmount delay which should match your unmount animation duration
+            hide_delay=Duration::from_millis(1000)
+        >
+            // provide any `Children` inside here
+            <div class="here-i-am">
+                "Here I Am!"
+            </div>
+        </AnimatedShow>
+    }
+}

examples/animated_show/src/main.rs

@@ -0,0 +1,8 @@
+use animated_show::App;
+use leptos::*;
+
+pub fn main() {
+    _ = console_log::init_with_level(log::Level::Debug);
+    console_error_panic_hook::set_once();
+    mount_to_body(App);
+}

examples/cargo-make/cargo-leptos-test.toml

@@ -1,5 +1,4 @@
-[tasks.test-e2e]
-dependencies = ["setup-node", "cargo-leptos-e2e"]
+extend = { path = "./cargo-leptos.toml" }
 
-[tasks.clean-all]
-dependencies = ["clean-cargo", "clean-node_modules", "clean-playwright"]
+[tasks.integration-test]
+dependencies = ["install-cargo-leptos", "cargo-leptos-e2e"]

examples/cargo-make/cargo-leptos-webdriver-test.toml

@@ -0,0 +1,7 @@
+extend = [
+    { path = "./cargo-leptos.toml" },
+    { path = "../cargo-make/webdriver.toml" },
+]
+
+[tasks.integration-test]
+dependencies = ["install-cargo-leptos", "start-webdriver", "cargo-leptos-e2e"]

examples/cargo-make/cargo-leptos.toml

@@ -0,0 +1,32 @@
+[tasks.install-cargo-leptos]
+install_crate = { crate_name = "cargo-leptos", binary = "cargo-leptos", test_arg = "--help" }
+
+[tasks.cargo-leptos-e2e]
+command = "cargo"
+args = ["leptos", "end-to-end"]
+
+[tasks.build]
+clear = true
+command = "cargo"
+args = ["leptos", "build"]
+
+[tasks.check]
+clear = true
+dependencies = ["check-debug", "check-release"]
+
+[tasks.check-debug]
+toolchain = "nightly"
+command = "cargo"
+args = ["check-all-features"]
+install_crate = "cargo-all-features"
+
+[tasks.check-release]
+toolchain = "nightly"
+command = "cargo"
+args = ["check-all-features", "--release"]
+install_crate = "cargo-all-features"
+
+[tasks.start-client]
+dependencies = ["install-cargo-leptos"]
+command = "cargo"
+args = ["leptos", "watch"]

examples/cargo-make/clean.toml

@@ -0,0 +1,29 @@
+[tasks.clean]
+dependencies = [
+  "clean-cargo",
+  "clean-trunk",
+  "clean-node_modules",
+  "clean-playwright",
+]
+
+[tasks.clean-cargo]
+command = "rm"
+args = ["-rf", "target"]
+
+[tasks.clean-trunk]
+script = '''
+find . -type d -name dist | xargs rm -rf
+'''
+
+[tasks.clean-node_modules]
+script = '''
+project_dir=${PWD##*/}
+if [ "$project_dir" != "todomvc" ]; then
+  find . -type d -name node_modules | xargs rm -rf
+fi
+'''
+
+[tasks.clean-playwright]
+script = '''
+find . -name playwright-report -name playwright -name test-results | xargs rm -rf
+'''

examples/cargo-make/client-process.toml

@@ -0,0 +1,34 @@
+[tasks.start-client]
+
+[tasks.stop-client]
+condition = { env_set = ["CLIENT_PROCESS_NAME"] }
+script = '''
+  if [ ! -z $(pidof ${CLIENT_PROCESS_NAME}) ]; then
+    pkill -ef ${CLIENT_PROCESS_NAME}
+  fi
+'''
+
+[tasks.client-status]
+condition = { env_set = ["CLIENT_PROCESS_NAME"] }
+script = '''
+  if [ -z $(pidof ${CLIENT_PROCESS_NAME}) ]; then
+    echo "  ${CLIENT_PROCESS_NAME} is not running"
+  else
+    echo "  ${CLIENT_PROCESS_NAME} is up"
+  fi
+'''
+
+[tasks.maybe-start-client]
+condition = { env_set = ["CLIENT_PROCESS_NAME"] }
+script = '''
+  if [ -z $(pidof ${CLIENT_PROCESS_NAME}) ]; then
+    echo "  Starting ${CLIENT_PROCESS_NAME}"
+    if [ -z ${SPAWN_CLIENT_PROCESS} ];then
+      cargo make start-client ${@} &
+    else
+      cargo make start-client ${@}
+    fi
+  else
+    echo "  ${CLIENT_PROCESS_NAME} is already started"
+  fi
+'''