[#BloombergLP-bdlf-MemFn-operator_call-0af]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlf.adoc[bdlf]::xref:BloombergLP/bdlf/MemFn.adoc[MemFn]::operator()
:relfileprefix: ../../../
:mrdocs:

Invoke the member function pointer held by this wrapper on the specified `object` reference to a non‐modifiable instance of the parameterized `INSTANCE` type, with no arguments, and return the result of this invocation, or `void` if this member function pointer does not return a result.

== Synopsis

Declared in `<bdlf_memfn.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class INSTANCE>
xref:BloombergLP/bdlf/MemFn/ResultType.adoc[ResultType]
operator()(INSTANCE const& object) const;
----


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