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

Efficiently exchange the nodes in the specified `a` tree with the nodes in the specified `b` tree. This method provides the no‐throw exception‐safety guarantee. The behavior is undefined unless `a` and `b` are well‐formed (see `isWellFormed`).

== Synopsis

Declared in `<bslalg_rbtreeutil.h>`

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


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