[#BloombergLP-bdlc-FlatHashSet_EntryUtil-key]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlc.adoc[bdlc]::xref:BloombergLP/bdlc/FlatHashSet_EntryUtil.adoc[FlatHashSet_EntryUtil]::key
:relfileprefix: ../../../
:mrdocs:

Return the key of the specified `entry`.

== Synopsis

Declared in `<bdlc_flathashset.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
ENTRY const&
key(ENTRY const& entry);
----

== Return Value

const reference to the key of `entry`

== Parameters

[cols="1,4"]
|===
| Name| Description
| *entry*
| entry whose key is returned
|===


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