[#BloombergLP-bdlc-FlatHashMap-at-070]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlc.adoc[bdlc]::xref:BloombergLP/bdlc/FlatHashMap.adoc[FlatHashMap]::at
:relfileprefix: ../../../
:mrdocs:

Return a reference providing modifiable access to the mapped value associated with the specified `key` in this map, if such an entry exists; otherwise throw a `std::out_of_range` exception. Note that this method is not exception‐neutral.

== Synopsis

Declared in `<bdlc_flathashmap.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
VALUE&
at(KEY const& key);
----


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