[#BloombergLP-bdlc-swap-061]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlc.adoc[bdlc]::swap
:relfileprefix: ../../
:mrdocs:

Exchange the value, the hasher, and the key‐equality functor of the specified `a` and `b` objects. This function provides the no‐throw exception‐safety guarantee if the two objects were created with the same allocator and the basic guarantee otherwise.

== Synopsis

Declared in `<bdlc_flathashmap.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class KEY,
    class VALUE,
    class HASH,
    class EQUAL>
void
swap(
    xref:BloombergLP/bdlc/FlatHashMap.adoc[FlatHashMap<KEY, VALUE, HASH, EQUAL>]& a,
    xref:BloombergLP/bdlc/FlatHashMap.adoc[FlatHashMap<KEY, VALUE, HASH, EQUAL>]& b);
----


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