[#BloombergLP-bdlb-Variant_EqualityTestVisitor-operator_call-06]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/Variant_EqualityTestVisitor.adoc[Variant&lowbar;EqualityTestVisitor]::operator()
:relfileprefix: ../../../
:mrdocs:

Treat an unset variant as equal to an unset peer&period;

== Synopsis

Declared in `&lt;bdlb&lowbar;variant&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
operator()(xref:BloombergLP/bslmf/Nil.adoc[bslmf::Nil] unused) const;
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *unused*
| unused `bslmf&colon;&colon;Nil` placeholder
|===


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