[#BloombergLP-bdljsn-swap-03c]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdljsn.adoc[bdljsn]::swap
:relfileprefix: ../../
:mrdocs:

Exchange the values of the specified `a` and `b` objects. This exception provides the no‐throw exception‐safety guarantee. Note that, since `a` and `b` have the same value (a class invariant), this operation is a no‐op.

== Synopsis

Declared in `<bdljsn_jsonnull.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
swap(
    xref:BloombergLP/bdljsn/JsonNull-0b.adoc[JsonNull]& a,
    xref:BloombergLP/bdljsn/JsonNull-0b.adoc[JsonNull]& b);
----


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