[#bsl-owner_hash-operator_call-09]
= xref:bsl.adoc[bsl]::xref:bsl/owner_hash.adoc[owner_hash]::operator()
:relfileprefix: ../../
:mrdocs:

Return the result of calling `owner_hash()` on the specified `x`. Note that for any object `y` where `x.owner_equal(y)` is true, `x.owner_hash() == y.owner_hash()` is true.

== Synopsis

Declared in `<bslstl_ownerhash.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class ELEMENT_TYPE>
std::size_t
operator()(xref:bsl/weak_ptr-0d.adoc[weak_ptr<ELEMENT_TYPE>] const& x) const noexcept;
----


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