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.

unordered_multiset<KEY, HASH, EQUAL, ALLOCATOR>::size_type
count(key_type const& key) const;

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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.

template<class LOOKUP_KEY>
size_type
count(LOOKUP_KEY const& key) const
requires BloombergLP::bslmf::IsTransparentPredicate<HASH, LOOKUP_KEY>::value
        && BloombergLP::bslmf::IsTransparentPredicate<EQUAL,LOOKUP_KEY>::value;

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