[#BloombergLP-bslmf-InvokeResult_MemFuncPtrImpDispatch-01]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslmf.adoc[bslmf]::xref:BloombergLP/bslmf/InvokeResult_MemFuncPtrImpDispatch-076.adoc[InvokeResult_MemFuncPtrImpDispatch]<bslmf::VoidType<decltype((InvokeResult_ImpUtils::myDeclval<t_ARG1TYPE>().*
                  InvokeResult_ImpUtils::myDeclval<t_FN>())(
                    InvokeResult_ImpUtils::myDeclval<t_ARGTYPES>()...))>::type, true, false, t_FN, t_ARG1TYPE, t_ARGTYPES...>
:relfileprefix: ../../
:mrdocs:

`invoke_result` for `(arg1.*fn)(args...)`.

== Synopsis

Declared in `<bslmf_invokeresult.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class t_FN,
    class t_ARG1TYPE,
    class... t_ARGTYPES>
struct xref:BloombergLP/bslmf/InvokeResult_MemFuncPtrImpDispatch-076.adoc[InvokeResult_MemFuncPtrImpDispatch]<bslmf::VoidType<decltype((InvokeResult_ImpUtils::myDeclval<t_ARG1TYPE>().*
                  InvokeResult_ImpUtils::myDeclval<t_FN>())(
                    InvokeResult_ImpUtils::myDeclval<t_ARGTYPES>()...))>::type, true, false, t_FN, t_ARG1TYPE, t_ARGTYPES...>
    : /* implementation-defined */
----

== Description

Implementation of `invoke_result<t_FN, t_ARGTYPES...>`. This specialization is instantiated in C++11 and later when `t_FN` is a pointer‐to‐member‐function type, `t_ARG1TYPE` is a class type that derives from the class type of `t_FN`, and the `INVOKE(fn, arg1, args...)` expression is well‐formed given `fn` is an object of the specified `t_FN` type and `arg1, args...` are objects of the specified `t_ARG1TYPE, t_ARGTYPES...` types. The `INVOKE(fn, arg1, args...)` expression in this case is `(arg1.*fn)(args...)`.

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `/* implementation-defined */`
| Utility metaprogramming functions inherited by other metaprogramming classes.
|===

== Types

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslmf/InvokeResult_MemFuncPtrImpDispatch-01/AnyLvalue.adoc[`AnyLvalue`] 
| Type convertible from any lvalue type. Used for overload resolution in metafunctions.
| xref:BloombergLP/bslmf/InvokeResult_MemFuncPtrImpDispatch-01/AnyRvalue.adoc[`AnyRvalue`] 
| Type convertible from any rvalue type. Used for overload resolution in metafunctions.
|===


== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslmf/InvokeResult_MemFuncPtrImpDispatch-01/type.adoc[`type`] 
| `INVOKE` result type for `(arg1.*fn)(args...)`.
|===


== Static Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslmf/InvokeResult_MemFuncPtrImpDispatch-01/checkConst-0f.adoc[`checkConst`] 
| `checkConst` overloads
| xref:BloombergLP/bslmf/InvokeResult_MemFuncPtrImpDispatch-01/checkLvalue-08.adoc[`checkLvalue`] 
| `checkLvalue` overloads
| xref:BloombergLP/bslmf/InvokeResult_MemFuncPtrImpDispatch-01/checkVolatile-0d.adoc[`checkVolatile`] 
| `checkVolatile` overloads
| xref:BloombergLP/bslmf/InvokeResult_MemFuncPtrImpDispatch-01/myDeclval.adoc[`myDeclval`] 
| Return a `declval` reference for unevaluated metaprogramming.
| xref:BloombergLP/bslmf/InvokeResult_MemFuncPtrImpDispatch-01/uncv-01.adoc[`uncv`] 
| `uncv` overloads
| xref:BloombergLP/bslmf/InvokeResult_MemFuncPtrImpDispatch-01/unpoint-070.adoc[`unpoint`] 
| `unpoint` overloads
|===



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