[#BloombergLP-ball-CategoryManagerManip-advance]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/ball.adoc[ball]::xref:BloombergLP/ball/CategoryManagerManip.adoc[CategoryManagerManip]::advance
:relfileprefix: ../../../
:mrdocs:

Advance this iterator to the next unvisited category&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
advance();
----

== Description

Advance this iterator to refer to the next unvisited category&period; If no such category exists, this iterator becomes invalid&period; The behavior is undefined unless this iterator is initially valid&period; Note that the order of iteration is undefined&period;


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