[#BloombergLP-bdlf-MemFn-operator_call-010]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlf.adoc[bdlf]::xref:BloombergLP/bdlf/MemFn.adoc[MemFn]::operator()
:relfileprefix: ../../../
:mrdocs:

Invoke the held member function with two arguments.

== 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& object,
    xref:BloombergLP/bdlf/MemFn.adoc[ARG1] arg1,
    xref:BloombergLP/bdlf/MemFn.adoc[ARG2] arg2) const;
----

== Description

Invoke the member function pointer held by this wrapper on the specified `object` reference to a modifiable instance of the parameterized `INSTANCE` type, with the specified arguments `arg1` up to `arg2`, and return the result of this invocation, or `void` if this member function pointer does not return a result.

== Return Value

result of the member‐function invocation

== Parameters

[cols="1,4"]
|===
| Name| Description
| *object*
| instance on which to invoke the member function
| *arg1*
| first argument
| *arg2*
| second argument
|===


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