[#BloombergLP-bdlc-Queue-back-0d]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlc.adoc[bdlc]::xref:BloombergLP/bdlc/Queue.adoc[Queue]::back
:relfileprefix: ../../../
:mrdocs:

Return a reference to the non‐modifiable element at the back of this queue. The reference will remain valid as long as this queue is not destroyed or modified (e.g., via `insert`, `remove`, or `append`). The behavior is undefined if this queue is empty. Note that this function is logically equivalent to: ` operator ‐ 1) `

== Synopsis

Declared in `<bdlc_queue.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
T const&
back() const;
----


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