| libsigc++
    2.10.3
    | 
Trait that specifies the return type of any type. More...
#include <sigc++/functors/functor_trait.h>
| Public Types | |
| typedef T_functor | functor_type | 
| typedef void | result_type | 
Trait that specifies the return type of any type.
Template specializations for functors derived from sigc::functor_base, for other functors whose result type can be deduced with decltype(), for function pointers and for class methods are provided.
| T_functor | Functor type. | 
| I_derives_functor_base | Whether T_functorinherits from sigc::functor_base. | 
| I_can_use_decltype | Whether the result type of T_functorcan be deduced with decltype(). | 
| typedef T_functor sigc::functor_trait< T_functor, I_derives_functor_base, I_can_use_decltype >::functor_type | 
| typedef void sigc::functor_trait< T_functor, I_derives_functor_base, I_can_use_decltype >::result_type | 
 1.8.17
 1.8.17