[#BloombergLP-bslstl-Variant_SwapVisitor]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::Variant_SwapVisitor
:relfileprefix: ../../
:mrdocs:

This component‐private class is a visitor that is used to implement `bsl::variant::swap`.

== Synopsis

Declared in `<bslstl_variant.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_VARIANT>
class Variant_SwapVisitor;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslstl/Variant_SwapVisitor/2constructor.adoc[`Variant_SwapVisitor`]         [.small]#[constructor]#
| Create a `Variant_SwapVisitor` object that, when invoked, will swap the visited alternative with the active alternative of the specified `variant`.
| xref:BloombergLP/bslstl/Variant_SwapVisitor/operator_call.adoc[`operator()`] 
| Swap the alternative having index (template parameter) `t_INDEX` in `*d_variant_p` with the specified `value` (i.e. the alternative that is being visited). The behavior is undefined unless `t_INDEX` is the index of the active alternative of `*d_variant_p` (or, in C++03, the index of an alternative that has the same type as the active alternative).
|===



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