[#BloombergLP-bdlc-Queue-pushBack] = xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlc.adoc[bdlc]::xref:BloombergLP/bdlc/Queue.adoc[Queue]::pushBack :relfileprefix: ../../../ :mrdocs: Append the specified `item` to the back of this queue efficiently (in O[1]time when memory reallocation is not required). Note that this function is logically equivalent to (but generally more efficient than): ` insert(length(), item); ` == Synopsis Declared in `<bdlc_queue.h>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- void pushBack(T const& item); ---- [.small]#Created with https://www.mrdocs.com[MrDocs]#