[#BloombergLP-ball-CategoryManager-length]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/ball.adoc[ball]::xref:BloombergLP/ball/CategoryManager.adoc[CategoryManager]::length
:relfileprefix: ../../../
:mrdocs:

Return the number of categories in the registry of this category manager&period;

== Synopsis

Declared in `&lt;ball&lowbar;categorymanager&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
length() const;
----

== Return Value

number of categories in the registry of this category manager


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