[#bsl-unordered_set-0d2d-bucket-00]
= xref:bsl.adoc[bsl]::xref:bsl/unordered_set-0d2d.adoc[unordered_set]::bucket
:relfileprefix: ../../
:mrdocs:

Return the index of the bucket, in the array of buckets of this container, where a value equivalent to the specified `key` would be inserted.

== Synopsis

Declared in `<bslstl_unorderedset.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/unordered_set-0d2d/size_type.adoc[unordered_set<KEY, HASH, EQUAL, ALLOCATOR>::size_type]
bucket(xref:bsl/unordered_set-0d2d/key_type.adoc[key_type] const& key) const;
----


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