[#BloombergLP-bslstl-TreeIterator-operator_dec] = xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/TreeIterator.adoc[TreeIterator]::operator‐‐ :relfileprefix: ../../../ :mrdocs: Move this iterator to the previous element in the tree and return a reference providing modifiable access to this iterator. The behavior is undefined unless the iterator refers to the past‐the‐end address or the non‐leftmost element in the tree. == Synopsis Declared in `<bslstl_treeiterator.h>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- xref:BloombergLP/bslstl/TreeIterator.adoc[TreeIterator<VALUE, NODE, DIFFERENCE_TYPE>]& operator‐‐(); ---- [.small]#Created with https://www.mrdocs.com[MrDocs]#