[#BloombergLP-bslfmt-swap]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslfmt.adoc[bslfmt]::swap
:relfileprefix: ../../
:mrdocs:

Exchange the values of the specified `lhs` and `rhs`.

== Synopsis

Declared in `<bslfmt_format_arg.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
swap(
    xref:BloombergLP/bslfmt/basic_format_arg-05.adoc[basic_format_arg]& lhs,
    xref:BloombergLP/bslfmt/basic_format_arg-05.adoc[basic_format_arg]& rhs);
----

[NOTE]
====
This function is a https://en.cppreference.com/w/cpp/language/friend[hidden friend] of xref:BloombergLP/bslfmt/basic_format_arg-05.adoc[basic_format_arg<basic_format_context<t_OUT, t_CHAR>>], declared only inside that class: it can be found only through argument-dependent lookup.
====

== Parameters

[cols="1,4"]
|===
| Name| Description
| *lhs*
| first format argument to exchange
| *rhs*
| second format argument to exchange
|===


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