[#BloombergLP-bslstl-Variant_Base-Variant_Union]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/Variant_Base.adoc[Variant&lowbar;Base]::Variant&lowbar;Union
:relfileprefix: ../../../
:mrdocs:

Union holding the active alternative objects&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
typedef xref:BloombergLP/bslstl/Variant_Union-0a.adoc[BloombergLP::bslstl::Variant&lowbar;Union&lt;t&lowbar;HEAD, t&lowbar;TAIL&period;&period;&period;&gt;] Variant&lowbar;Union;
----


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