Return the number of elements equivalent to key.
Declared in <bslstl_unorderedmultiset.h>
unordered_multiset<KEY, HASH, EQUAL, ALLOCATOR>::size_type
count(key_type const& key) const;Return the number of value_type objects within this unordered multiset that are equivalent to the specified key.
number of elements equivalent to key
| Name | Description |
|---|---|
| key | key value to count |