diff options
Diffstat (limited to '')
-rw-r--r-- | library/std/src/collections/hash/set.rs | 5 | ||||
-rw-r--r-- | library/std/src/collections/hash/set/tests.rs | 6 |
2 files changed, 9 insertions, 2 deletions
diff --git a/library/std/src/collections/hash/set.rs b/library/std/src/collections/hash/set.rs index 5b6a415fa..cee884145 100644 --- a/library/std/src/collections/hash/set.rs +++ b/library/std/src/collections/hash/set.rs @@ -376,7 +376,8 @@ impl<T, S> HashSet<T, S> { /// ``` #[inline] #[stable(feature = "hashmap_build_hasher", since = "1.7.0")] - pub fn with_hasher(hasher: S) -> HashSet<T, S> { + #[rustc_const_unstable(feature = "const_collections_with_hasher", issue = "102575")] + pub const fn with_hasher(hasher: S) -> HashSet<T, S> { HashSet { base: base::HashSet::with_hasher(hasher) } } @@ -461,7 +462,7 @@ where /// Tries to reserve capacity for at least `additional` more elements to be inserted /// in the `HashSet`. The collection may reserve more space to speculatively - /// avoid frequent reallocations. After calling `reserve`, + /// avoid frequent reallocations. After calling `try_reserve`, /// capacity will be greater than or equal to `self.len() + additional` if /// it returns `Ok(())`. /// Does nothing if capacity is already sufficient. diff --git a/library/std/src/collections/hash/set/tests.rs b/library/std/src/collections/hash/set/tests.rs index 233db276b..941a0450c 100644 --- a/library/std/src/collections/hash/set/tests.rs +++ b/library/std/src/collections/hash/set/tests.rs @@ -496,3 +496,9 @@ fn from_array() { // that's a problem! let _must_not_require_type_annotation = HashSet::from([1, 2]); } + +#[test] +fn const_with_hasher() { + const X: HashSet<(), ()> = HashSet::with_hasher(()); + assert_eq!(X.len(), 0); +} |