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

Construct an `ENTRY` in‐place from the specified key.

== Synopsis

Declared in `<bdlc_flathashset.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class KEY_TYPE>
static
void
constructFromKey(
    ENTRY* entry,
    xref:BloombergLP/bslma/Allocator.adoc[bslma::Allocator]* allocator,
    KEY_TYPE&& key);
----

== Description

Load into the specified `entry` the `ENTRY` value comprised of the specified `key`, using the specified `allocator` to supply memory. `allocator` is ignored if the (template parameter) type `ENTRY` is not allocator aware.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *entry*
| address at which to construct the entry
| *allocator*
| allocator used to supply memory
| *key*
| key used to construct the entry
|===


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