diff options
Diffstat (limited to 'compiler/rustc_data_structures/src')
| -rw-r--r-- | compiler/rustc_data_structures/src/sso/set.rs | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/compiler/rustc_data_structures/src/sso/set.rs b/compiler/rustc_data_structures/src/sso/set.rs index f71522d3714..4fda3adb7b8 100644 --- a/compiler/rustc_data_structures/src/sso/set.rs +++ b/compiler/rustc_data_structures/src/sso/set.rs @@ -126,9 +126,10 @@ impl<T: Eq + Hash> SsoHashSet<T> { /// Adds a value to the set. /// - /// If the set did not have this value present, `true` is returned. + /// Returns whether the value was newly inserted. That is: /// - /// If the set did have this value present, `false` is returned. + /// - If the set did not previously contain this value, `true` is returned. + /// - If the set already contained this value, `false` is returned. #[inline] pub fn insert(&mut self, elem: T) -> bool { self.map.insert(elem, ()).is_none() |