[#BloombergLP-bslstl-TreeIterator-operator_dec]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/TreeIterator.adoc[TreeIterator]::operator&hyphen;&hyphen;
:relfileprefix: ../../../
:mrdocs:

Move this iterator to the previous element in the tree&period;

== Synopsis

Declared in `&lt;bslstl&lowbar;treeiterator&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bslstl/TreeIterator.adoc[TreeIterator&lt;VALUE, NODE, DIFFERENCE&lowbar;TYPE&gt;]&
operator&hyphen;&hyphen;();
----

== Description

Move this iterator to the previous element in the tree and return a reference providing modifiable access to this iterator&period; The behavior is undefined unless the iterator refers to the past&hyphen;the&hyphen;end address or the non&hyphen;leftmost element in the tree&period;

== Return Value

reference providing modifiable access to this iterator


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