Rust logo
Rust 1.26.0

if let

There is a new edition of the book and this is an old link.

The if let syntax lets you combine if and let into a less verbose way to handle values that match one pattern and ignore the rest.

let some_u8_value = Some(3u8);
if let Some(3) = some_u8_value {

Here are the relevant sections in the new and old books: