| % Functions |
| |
| <small>There is a new edition of the book and this is an old link.</small> |
| |
| > Function definitions in Rust start with `fn` and have a set of parentheses after the function name. |
| > The curly brackets tell the compiler where the function body begins and ends. |
| > We can call any function we’ve defined by entering its name followed by a set of parentheses. |
| |
| ```rust |
| fn main() { |
| println!("Hello, world!"); |
| |
| another_function(); |
| } |
| |
| fn another_function() { |
| println!("Another function."); |
| } |
| ``` |
| |
| --- |
| |
| Here are the relevant sections in the new and old books: |
| |
| * **[In the first edition: Ch 3.2 — Functions][1]** |
| * <small>[in the current edition: Ch 3.03 — Functions][2]</small> |
| |
| |
| [1]: https://doc.rust-lang.org/1.30.0/book/first-edition/functions.html |
| [2]: ch03-03-how-functions-work.html |
