[#BloombergLP-bslstl-Variant_IsTag-0a]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/Variant_IsTag-01.adoc[Variant&lowbar;IsTag]&lt;bsl::in&lowbar;place&lowbar;index&lowbar;t&lt;t&lowbar;INDEX&gt;&gt;
:relfileprefix: ../../
:mrdocs:

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template&lt;size&lowbar;t t&lowbar;INDEX&gt;
struct xref:BloombergLP/bslstl/Variant_IsTag-01.adoc[Variant&lowbar;IsTag]&lt;bsl::in&lowbar;place&lowbar;index&lowbar;t&lt;t&lowbar;INDEX&gt;&gt;
    : xref:bsl/true_type.adoc[bsl::true&lowbar;type]
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:bsl/true_type.adoc[bsl::true&lowbar;type]`
| Metafunction representing the boolean constant `true`&period;
|===


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