[#BloombergLP-bslfmt-basic_format_arg-05-visit]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslfmt.adoc[bslfmt]::xref:BloombergLP/bslfmt/basic_format_arg-05.adoc[basic_format_arg<basic_format_context<t_OUT, t_CHAR>>]::visit
:relfileprefix: ../../../
:mrdocs:

Invoke `visitor` on the value contained by this object.

== Synopsis

Declared in `<bslfmt_format_arg.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_VISITOR>
decltype(auto)
visit(t_VISITOR&& visitor);
----

== Description

Invoke the specified `visitor` functor on the value contained by this object, providing that functor non‐modifiable access to that value. `visitor` must be a `variant`‐style functor that is able to visit all supported types listed in the {DESCRIPTION}.

== Return Value

result of invoking `visitor` on the contained value

== Parameters

[cols="1,4"]
|===
| Name| Description
| *visitor*
| functor invoked with the contained value
|===


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