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

Efficiently exchange the values of the specified `a` and `b` objects. This function provides the no‐throw exception‐safety guarantee. The behavior is undefined unless the two objects were created with the same allocator.

== Synopsis

Declared in `<bslalg_hashtableanchor.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
swap(
    xref:BloombergLP/bslalg/HashTableAnchor.adoc[HashTableAnchor]& a,
    xref:BloombergLP/bslalg/HashTableAnchor.adoc[HashTableAnchor]& b);
----


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