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Remove an outdated example that says it won't compile but it does

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Fixes #1656.
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Carol (Nichols || Goulding)
2022-01-11 16:47:40 -05:00
committed by Carol (Nichols || Goulding)
parent f17df27fc1
commit 45fe0fc9af
1 changed files with 2 additions and 3 deletions
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src/ch15-04-rc.md
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@@ -70,9 +70,8 @@ creating `c`, we’re not allowed to because `a` has been moved.
We could change the definition of `Cons` to hold references instead, but then
we would have to specify lifetime parameters. By specifying lifetime
parameters, we would be specifying that every element in the list will live at
least as long as the entire list. The borrow checker wouldn’t let us compile
`let a = Cons(10, &Nil);` for example, because the temporary `Nil` value would
be dropped before `a` could take a reference to it.
least as long as the entire list. This is the case for the elements and lists
in Listing 15-17, but not in every scenario.
Instead, we’ll change our definition of `List` to use `Rc<T>` in place of
`Box<T>`, as shown in Listing 15-18. Each `Cons` variant will now hold a value