[#bsl-swap-0ce]
= xref:bsl.adoc[bsl]::swap
:relfileprefix: ../
:mrdocs:

Swap the values of the specified `a` and `b` pairs by applying `swap` to each of the `first` and `second` pair fields. Note that this method is no‐throw only if `swap` on each field is no‐throw.

== Synopsis

Declared in `<bslstl_pair.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class T1,
    class T2>
void
swap(
    xref:bsl/pair-0b.adoc[pair<T1, T2>]& a,
    xref:bsl/pair-0b.adoc[pair<T1, T2>]& b) noexcept(noexcept(a.swap(b)))
requires bsl::is_swappable<T1>::value && bsl::is_swappable<T2>::value;
----


[.small]#Created with https://www.mrdocs.com[MrDocs]#