[#bsl-map-0c7-count-0b]
= xref:bsl.adoc[bsl]::xref:bsl/map-0c7.adoc[map<int, pair<shared_ptr<Statistics>, shared_ptr<Collector<OsLinux>>>>]::count
:relfileprefix: ../../
:mrdocs:

Return the number of `value_type` objects within this map whose keys are equivalent to the specified `key`. Note that since a map maintains unique keys, the returned value will be either 0 or 1.

== Synopsis

Declared in `<bslstl_map.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/map-0c7/size_type.adoc[size_type]
count(xref:bsl/map-0c7/key_type.adoc[key_type] const& key) const;
----


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