[#BloombergLP-bdlcc-Queue-tryPopFront-05]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlcc.adoc[bdlcc]::xref:BloombergLP/bdlcc/Queue.adoc[Queue]::tryPopFront
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:mrdocs:

Remove up to the specified `maxNumItems` from the front 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(popFront())` while the queue is not empty and `maxNumItems` have not yet been removed. The behavior is undefined unless `maxNumItems >= 0`. This method never blocks.

== Synopsis

Declared in `<bdlcc_queue.h>`

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


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