[#BloombergLP-bslstl-Variant_Function-05]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/Variant_Function-0b.adoc[Variant_Function]<void, t_VISITOR, t_VARIANT, t_INDEX>
:relfileprefix: ../../
:mrdocs:

This partial specialization is used when `t_RET` is `void`. The visitor is invoked and its return value, if any, is ignored. This partial specialization is necessary because a `void`‐returning function cannot contain a `return` statement with a non‐`void` operand.

== Synopsis

Declared in `<bslstl_variant.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class t_VISITOR,
    class t_VARIANT,
    size_t t_INDEX>
struct xref:BloombergLP/bslstl/Variant_Function-0b.adoc[Variant_Function]<void, t_VISITOR, t_VARIANT, t_INDEX>;
----

== Static Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslstl/Variant_Function-05/functionImpl.adoc[`functionImpl`] 
| Invoke the specified `visitor` on alternative `t_INDEX` of `variant`.
|===



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