count overloads

Synopses

Declared in <bslstl_unorderedmultimap.h>

Return the number of value_type objects in this unordered multimap with a key equivalent to the specified key.

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

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Return the number of value_type objects in this unordered multimap with a key equivalent to the specified key. The behavior is undefined unless key is equivalent to the key of the elements of at most one equivalent‐key group in this unordered multimap.

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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