Return the number of elements with a key equivalent to key.
Declared in <bslstl_unorderedmultimap.h>
unordered_multimap<KEY, VALUE, HASH, EQUAL, ALLOCATOR>::size_type
count(key_type const& key) const;Return the number of value_type objects in this unordered multimap with a key equivalent to the specified key.
number of elements with an equivalent key
| Name | Description |
|---|---|
| key | key value to count |