[#nlohmann-ordered_map-count-0d]
= xref:nlohmann.adoc[nlohmann]::xref:nlohmann/ordered_map.adoc[ordered_map]::count
:relfileprefix: ../../
:mrdocs:

returns the number of elements matching the given key

== Synopses

Declared in `<nlohmann/ordered_map.hpp>`

returns the number of elements matching the given key


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

[.small]#xref:nlohmann/ordered_map/count-0a.adoc[_» more..._]#

returns the number of elements matching the given key


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class KeyType>
requires detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value
xref:nlohmann/ordered_map/size_type.adoc[size_type]
xref:nlohmann/ordered_map/count-06.adoc[count](KeyType&& key) const;
----

[.small]#xref:nlohmann/ordered_map/count-06.adoc[_» more..._]#

== Return Value

1 if an element with the key exists, 0 otherwise

== Parameters

[cols="1,4"]
|===
| Name| Description
| *key* [in]
| key to count
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#