[#BloombergLP-balm-MetricRegistry-numCategories]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/balm.adoc[balm]::xref:BloombergLP/balm/MetricRegistry.adoc[MetricRegistry]::numCategories
:relfileprefix: ../../../
:mrdocs:

Return the number of categories in this registry.

== Synopsis

Declared in `<balm_metricregistry.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::size_t
numCategories() const;
----


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