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| author | Simon Sapin <simon.sapin@exyr.org> | 2019-10-23 15:42:52 +0200 |
|---|---|---|
| committer | Simon Sapin <simon.sapin@exyr.org> | 2019-10-23 15:46:42 +0200 |
| commit | e76a1846153209b15dfbf697a33c25214bb753b3 (patch) | |
| tree | c1c035bf10dca277c35e2096477fcc131a63f969 | |
| parent | f7ebe193389b4c63d9c93d79fff59568985e1763 (diff) | |
| download | rust-e76a1846153209b15dfbf697a33c25214bb753b3.tar.gz rust-e76a1846153209b15dfbf697a33c25214bb753b3.zip | |
Document guard expressions in `matches!`
| -rw-r--r-- | src/libcore/macros.rs | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/libcore/macros.rs b/src/libcore/macros.rs index 6e19878ef17..35558e3abcd 100644 --- a/src/libcore/macros.rs +++ b/src/libcore/macros.rs @@ -238,7 +238,10 @@ macro_rules! debug_assert_ne { ($($arg:tt)*) => (if $crate::cfg!(debug_assertions) { $crate::assert_ne!($($arg)*); }) } -/// Returns whether the given expression matches (any of) the given pattern(s). +/// 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 /// |