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30 lines
776 B
Markdown
30 lines
776 B
Markdown
% Method Syntax
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<small>There is a new edition of the book and this is an old link.</small>
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> Methods are different from functions in that they’re defined within the context of a struct, and their first parameter is always `self`, which represents the instance of the struct the method is being called on.
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```rust
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# struct Rectangle {
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# width: u32,
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# height: u32,
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# }
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impl Rectangle {
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fn area(&self) -> u32 {
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self.width * self.height
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}
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}
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```
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---
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Here are the relevant sections in the new and old books:
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* **[in the current edition: Ch 5.03 — Method Syntax][2]**
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* <small>[In the first edition: Ch 3.16 — Method Syntax][1]</small>
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[1]: https://doc.rust-lang.org/1.30.0/book/first-edition/method-syntax.html
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[2]: ch05-03-method-syntax.html
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