[#BloombergLP-bslstl-HashTable-09-countElementsInBucket]
= 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>>>]::countElementsInBucket
:relfileprefix: ../../../
:mrdocs:

Return the number elements contained in the bucket at the specified `index`. Note that this operation has linear run‐time complexity with respect to the number of elements in the indexed bucket.

== Synopsis

Declared in `<bslstl_hashtable.h>`

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


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