[#bsl-unordered_set-0d2d-2constructor-015]
= xref:bsl.adoc[bsl]::xref:bsl/unordered_set-0d2d.adoc[unordered_set]::unordered_set
:relfileprefix: ../../
:mrdocs:

Create an empty unordered set with the specified bucket count.

== Synopsis

Declared in `<bslstl_unorderedset.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
explicit
unordered_set(
    xref:bsl/unordered_set-0d2d/size_type.adoc[size_type] initialNumBuckets,
    HASH const& hashFunction = HASH(),
    EQUAL const& keyEqual = EQUAL(),
    ALLOCATOR const& basicAllocator = ALLOCATOR());
----

== Description

Same as the preceding overload, using the specified bucket count and hash/equality functors.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *initialNumBuckets*
| initial number of buckets
| *hashFunction*
| hash function
| *keyEqual*
| key‐equality functor
| *basicAllocator*
| allocator used to supply memory
|===


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