[#BloombergLP-bdlc-FlatHashSet-2constructor-09]
= 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`, `hash`, and `equal` predicate; optionally use `basicAllocator`.

== Synopsis

Declared in `<bdlc_flathashset.h>`

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

== Parameters

[cols="1,4"]
|===
| Name| Description
| *capacity*
| minimum initial capacity of the underlying array
| *hash*
| hash functor used by this set
| *equal*
| key‐equality predicate used by this set
| *basicAllocator*
| memory allocator; null uses the default
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#