[#bsl-hash_map-count]
= xref:bsl.adoc[bsl]::xref:bsl/hash_map.adoc[hash_map]::count
:relfileprefix: ../../
:mrdocs:

Return the number of elements matching the specified key.

== Synopsis

Declared in `<bslstp_hashmap.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/hash_map/size_type.adoc[size_type]
count(xref:bsl/hash_map/key_type.adoc[key_type] const& __key) const;
----


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