[#bsl-swap-03d7]
= xref:bsl.adoc[bsl]::swap
:relfileprefix: ../
:mrdocs:

Exchange the values of the specified `a` and `b` objects.

== Synopsis

Declared in `<bslstl_unorderedmultiset.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class KEY,
    class HASH,
    class EQUAL,
    class ALLOCATOR>
void
swap(
    xref:bsl/unordered_multiset-06c.adoc[unordered_multiset<KEY, HASH, EQUAL, ALLOCATOR>]& a,
    xref:bsl/unordered_multiset-06c.adoc[unordered_multiset<KEY, HASH, EQUAL, ALLOCATOR>]& b) noexcept(noexcept(a.swap(b)));
----


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