[#BloombergLP-ball-AttributeCollectorRegistry-Collector]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/ball.adoc[ball]::xref:BloombergLP/ball/AttributeCollectorRegistry.adoc[AttributeCollectorRegistry]::Collector
:relfileprefix: ../../../
:mrdocs:

`Collector` is the type of a user&hyphen;supplied attribute collector functor&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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typedef xref:bsl/function-0a.adoc[bsl::function&lt;void(xref:BloombergLP/ball/AttributeCollectorRegistry/Visitor.adoc[Visitor] const&)&gt;] Collector;
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