[#common-FindKey]
= xref:common.adoc[common]::FindKey
:relfileprefix: ../
:mrdocs:

Map lookup helper.

== Synopsis

Declared in `<common/settings.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename Map,
    typename Key>
decltype(&map.at(key))
FindKey(
    Map&& map,
    Key&& key);
----

== Return Value

Pointer to the mapped value, or nullptr if the key is absent.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *map*
| The map to search.
| *key*
| The key to look up.
|===


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