[#bsl-Pair_First-00-2constructor-0c0]
= xref:bsl.adoc[bsl]::xref:bsl/Pair_First-00.adoc[Pair_First]::Pair_First
:relfileprefix: ../../
:mrdocs:

Construct the 'first' member of a 'pair' from the specified 'value', using the specified 'basicAllocator' to supply memory. This function (perfectly) forwards 'value' to the constructor of (template parameter) 'TYPE' when 'TYPE' does not use 'bslma'‐style allocators.

== Synopsis

Declared in `<bslstl_pair.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class PARAM>
Pair_First(
    PARAM&& value,
    xref:BloombergLP/bslma/Allocator.adoc[BloombergLP::bslma::Allocator]* basicAllocator,
    xref:bsl/Pair_BslmaIdiomNone.adoc[Pair_BslmaIdiomNone]);
----


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