[#bsl-unordered_multiset-06c-count-00d]
= xref:bsl.adoc[bsl]::xref:bsl/unordered_multiset-06c.adoc[unordered_multiset]::count
:relfileprefix: ../../
:mrdocs:

`count` overloads

== Synopses

Declared in `<bslstl_unorderedmultiset.h>`

Return the number of `value_type` objects within this unordered multiset that are equivalent to the specified `key`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/unordered_multiset-06c/size_type.adoc[unordered_multiset<KEY, HASH, EQUAL, ALLOCATOR>::size_type]
xref:bsl/unordered_multiset-06c/count-01.adoc[count](xref:bsl/unordered_multiset-06c/key_type.adoc[key_type] const& key) const;
----

[.small]#xref:bsl/unordered_multiset-06c/count-01.adoc[_» more..._]#

Return the number of `value_type` objects within this unordered multiset that are equivalent to the specified `key`. The behavior is undefined unless `key` is equivalent to the elements of at most one equivalent‐key group in this unordered multiset.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class LOOKUP_KEY>
xref:bsl/unordered_multiset-06c/size_type.adoc[size_type]
xref:bsl/unordered_multiset-06c/count-007.adoc[count](LOOKUP_KEY const& key) const
requires BloombergLP::bslmf::IsTransparentPredicate<HASH, LOOKUP_KEY>::value
        && BloombergLP::bslmf::IsTransparentPredicate<EQUAL,LOOKUP_KEY>::value;
----

[.small]#xref:bsl/unordered_multiset-06c/count-007.adoc[_» more..._]#


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