std::matches - Rust
Description: API documentation for the Rust `matches` macro in crate `std`.
Keywords: rust, rustlang, rust-lang, matches

# 1.42.0[−][src]Macro std::matches

    macro_rules! matches {
        ($expression:expr, $( $pattern:pat )|+ $( if $guard: expr )?) => { ... };
    }

Returns whether the given expression matches any of the given patterns.

Like in a `match` expression, the pattern can be optionally followed by `if` and a guard expression that has access to names bound by the pattern.

# Examples

    let foo = 'f';
    assert!(matches!(foo, 'A'..='Z' | 'a'..='z'));

    let bar = Some(4);
    assert!(matches!(bar, Some(x) if x > 2));

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