[#BloombergLP-bdlc-FlatHashSet-2constructor-06]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlc.adoc[bdlc]::xref:BloombergLP/bdlc/FlatHashSet.adoc[FlatHashSet]::FlatHashSet
:relfileprefix: ../../../
:mrdocs:

Create an empty set with at least the specified `capacity` and `hash` functor; optionally use `basicAllocator`.

== Synopsis

Declared in `<bdlc_flathashset.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
FlatHashSet(
    std::size_t capacity,
    HASH const& hash,
    xref:BloombergLP/bslma/Allocator.adoc[bslma::Allocator]* basicAllocator = 0);
----


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