[#BloombergLP-bslstl-Variant_OverloadHelper-0d]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/Variant_OverloadHelper-05.adoc[Variant_OverloadHelper]<t_SRC, xref:bsl/variant.adoc[bsl::variant<t_HEAD, t_TAIL...>], xref:bsl/void_t.adoc[bsl::void_t<decltype(Variant_OverloadSetImp<t_SRC, 0, t_HEAD, t_TAIL...>::
                             candidate(std::declval<t_SRC>()))>]>
:relfileprefix: ../../
:mrdocs:

This partial specialization is used when a "unique" best match is found for converting `std::declval<t_SRC>()` to one of (template parameters) `t_HEAD, t_TAIL...`.

== Synopsis

Declared in `<bslstl_variant.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class t_SRC,
    class t_HEAD,
    class... t_TAIL>
struct xref:BloombergLP/bslstl/Variant_OverloadHelper-05.adoc[Variant_OverloadHelper]<t_SRC, xref:bsl/variant.adoc[bsl::variant<t_HEAD, t_TAIL...>], xref:bsl/void_t.adoc[bsl::void_t<decltype(Variant_OverloadSetImp<t_SRC, 0, t_HEAD, t_TAIL...>::
                             candidate(std::declval<t_SRC>()))>]>;
----

== Type Aliases

[cols="1"]
|===
| Name
| xref:BloombergLP/bslstl/Variant_OverloadHelper-0d/Index.adoc[`Index`] 
|===



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