[#bsl-unordered_set-09-2constructor-0a]
= xref:bsl.adoc[bsl]::xref:bsl/unordered_set-09.adoc[unordered_set<Attribute, AttributeHash>]::unordered_set
:relfileprefix: ../../
:mrdocs:

Create an unordered set from the specified `values` initializer list.

== Synopsis

Declared in `<bslstl_unorderedset.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<>
requires std::is_invocable_v<HASH, const KEY &> && std::is_invocable_v<EQUAL, const KEY &, const KEY &> && bsl::IsStdAllocator_v<ALLOCATOR>
unordered_set(
    std::initializer_list<Attribute> values,
    xref:bsl/unordered_set-09/size_type.adoc[size_type] initialNumBuckets = 0,
    xref:BloombergLP/ball/DefaultAttributeContainer.adoc[AttributeHash] const& hashFunction = HASH(),
    xref:bsl/equal_to-0d.adoc[equal_to<Attribute>] const& keyEqual = EQUAL(),
    xref:bsl/allocator-0df.adoc[allocator<Attribute>] const& basicAllocator = ALLOCATOR());
----


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