| % Lifetimes |
| |
| <small>There is a new edition of the book and this is an old link.</small> |
| |
| > Every reference in Rust has a lifetime, which is the scope for which that reference is valid. |
| > Most of the time lifetimes are implicit and inferred. |
| |
| ```rust |
| { |
| let x = 5; // -----+-- 'b |
| // | |
| let r = &x; // --+--+-- 'a |
| // | | |
| println!("r: {r}"); // | | |
| // --+ | |
| } // -----+ |
| ``` |
| |
| --- |
| |
| Here are the relevant sections in the new and old books: |
| |
| * **[in the current edition: Ch 10.03 — Lifetimes][2]** |
| * <small>[In the first edition: Ch 3.10 — Lifetimes][1]</small> |
| |
| |
| [1]: https://doc.rust-lang.org/1.30.0/book/first-edition/lifetimes.html |
| [2]: ch10-03-lifetime-syntax.html |
