[#BloombergLP-bdlcc-Queue-tryPopBack-02]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlcc.adoc[bdlcc]::xref:BloombergLP/bdlcc/Queue.adoc[Queue]::tryPopBack
:relfileprefix: ../../../
:mrdocs:

Remove up to the specified `maxNumItems` from the back of this queue. Optionally specify a `buffer` into which the items removed from the queue are loaded. If `buffer` is non‐null, the removed items are appended to it as if by repeated application of `buffer‐>push_back(popBack())` while the queue is not empty and `maxNumItems` have not yet been removed. This method never blocks. The behavior is undefined unless `maxNumItems >= 0`. Note that the ordering of the items in `*buffer` after the call is the reverse of the ordering they had in the queue.

== Synopsis

Declared in `<bdlcc_queue.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
tryPopBack(int maxNumItems);
----


[.small]#Created with https://www.mrdocs.com[MrDocs]#