hash map contains

1 files changed, 6 insertions, 4 deletions

diff --git a/include/std/hash_map.h b/include/std/hash_map.h
index d789db4..c9e5b51 100644
--- a/include/std/hash_map.h
+++ b/include/std/hash_map.h
@@ -25,15 +25,17 @@ struct HashMap {
 
 CHECK_RESULT int hash_map_init(HashMap *self, ArenaAllocator *allocator, usize value_type_size, HashMapCompare key_compare_func, HashMapHash key_hash_func);
 /*
-Not thread-safe.
-Expected @value size to be @self->value_type_size.
+    Not thread-safe.
+    Expected @value size to be @self->value_type_size.
 */
 CHECK_RESULT int hash_map_insert(HashMap *self, BufferView key, void *value);
 /*
-Thread-safe unless @hash_map_insert is used in another thread at the same time.
-Expected @value size to be @self->value_type_size.
+    Thread-safe unless @hash_map_insert is used in another thread at the same time.
+    Expected @value size to be @self->value_type_size.
+    If @value is NULL, then the value is not copied and the functions works the same as @hash_map_contains
 */
 CHECK_RESULT bool hash_map_get(HashMap *self, BufferView key, void *value);
+CHECK_RESULT bool hash_map_contains(HashMap *self, BufferView key);
 
 int hash_map_compare_string(const void *a, const void *b);