# sigc::retype_return_functor< void, T_functor > Struct Template Reference
retype(), retype_return()

Adaptor that performs a C-style cast on the return value of a functor. More...

`#include <sigc++/adaptors/retype_return.h>`

Inheritance diagram for sigc::retype_return_functor< void, T_functor >:
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List of all members.

## Public Types

typedef void | result_type

## Public Member Functions

void | operator() ()
template <class T_arg1 >
void | operator() (T_arg1 _A_a1)
template <class T_arg1 , class T_arg2 >
void | operator() (T_arg1 _A_a1, T_arg2 _A_a2)
template <class T_arg1 , class T_arg2 , class T_arg3 >
void | operator() (T_arg1 _A_a1, T_arg2 _A_a2, T_arg3 _A_a3)
template <class T_arg1 , class T_arg2 , class T_arg3 , class T_arg4 >
void | operator() (T_arg1 _A_a1, T_arg2 _A_a2, T_arg3 _A_a3, T_arg4 _A_a4)
template <class T_arg1 , class T_arg2 , class T_arg3 , class T_arg4 , class T_arg5 >
void | operator() (T_arg1 _A_a1, T_arg2 _A_a2, T_arg3 _A_a3, T_arg4 _A_a4, T_arg5 _A_a5)
template <class T_arg1 , class T_arg2 , class T_arg3 , class T_arg4 , class T_arg5 , class T_arg6 >
void | operator() (T_arg1 _A_a1, T_arg2 _A_a2, T_arg3 _A_a3, T_arg4 _A_a4, T_arg5 _A_a5, T_arg6 _A_a6)
template <class T_arg1 , class T_arg2 , class T_arg3 , class T_arg4 , class T_arg5 , class T_arg6 , class T_arg7 >
void | operator() (T_arg1 _A_a1, T_arg2 _A_a2, T_arg3 _A_a3, T_arg4 _A_a4, T_arg5 _A_a5, T_arg6 _A_a6, T_arg7 _A_a7)
| retype_return_functor (typename type_trait< T_functor >::take _A_functor)

## Detailed Description

### template<class T_functor>
struct sigc::retype_return_functor< void, T_functor >

Adaptor that performs a C-style cast on the return value of a functor.

This template specialization is for a void return. It drops the return value of the functor it invokes. Use the convenience function sigc::hide_return() to create an instance of sigc::retype_return_functor<void>.