[#BloombergLP-bslh-Hash-02-operator_call]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslh.adoc[bslh]::xref:BloombergLP/bslh/Hash-02.adoc[Hash<>]::operator()
:relfileprefix: ../../../
:mrdocs:

Returns a hash value generated by the (template parameter) type `HASH_ALGORITHM` for the specified `type`. The value returned by the `HASH_ALGORITHM` is cast to `size_t` before returning.

== Synopsis

Declared in `<bslh_hash.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class TYPE>
xref:BloombergLP/bslh/Hash-02/result_type.adoc[bslh::Hash<bslh::DefaultHashAlgorithm>::result_type]
operator()(TYPE const& key) const;
----


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