libsigc++: sigc::retype_return_functor< T_return, T_functor > Struct Template Reference

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< T_return, T_functor >:

Public Member Functions

 retype_return_functor ()=default
 
 retype_return_functor (type_trait_take_t< T_functor > functor)
 Constructs a retype_return_functor object that perform a C-style cast on the return value of the passed functor. More...

 
template<typename... T_arg>
T_return operator() (T_arg&&...a)
 
- Public Member Functions inherited from sigc::adapts< T_functor >
 adapts (const T_functor& functor)
 Constructs an adaptor that wraps the passed functor. More...

 

Additional Inherited Members

- Public Attributes inherited from sigc::adapts< T_functor >
adaptor_type functor_
 Adaptor that is invoked from operator()(). More...

 

Detailed Description

template<typename T_return, typename T_functor>

struct sigc::retype_return_functor< T_return, T_functor >

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

Use the convenience function sigc::retype_return() to create an instance of retype_return_functor.

The following template arguments are used:

  • T_return Target type of the C-style cast.
  • T_functor Type of the functor to wrap.

Constructor & Destructor Documentation

template <typename T_return , typename T_functor >
sigc::retype_return_functor< T_return, T_functor >::retype_return_functor ( )
default
template <typename T_return , typename T_functor >
sigc::retype_return_functor< T_return, T_functor >::retype_return_functor ( type_trait_take_t< T_functor >  functor)
inlineexplicit

Constructs a retype_return_functor object that perform a C-style cast on the return value of the passed functor.

Parameters
functorFunctor to invoke from operator()().

Member Function Documentation

template <typename T_return , typename T_functor >
template <typename... T_arg>
T_return sigc::retype_return_functor< T_return, T_functor >::operator() ( T_arg &&...  a)
inline