[#BloombergLP-bslstl-HashTable-09-bucketIndexForKey-00]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/HashTable-09.adoc[HashTable<UnorderedMapKeyConfiguration<basic_string<char> const, pair<basic_string<char> const, Json>>, TransparentHash, TransparentEqualTo, allocator<pair<basic_string<char> const, Json>>>]::bucketIndexForKey
:relfileprefix: ../../../
:mrdocs:

Return the index of the bucket that would contain all the elements having the specified `key`.

== Synopsis

Declared in `<bslstl_hashtable.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bslstl/HashTable-09/SizeType.adoc[SizeType]
bucketIndexForKey(xref:BloombergLP/bslstl/HashTable-09/KeyType.adoc[KeyType] const& key) const;
----


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