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std::is_member_object_pointer

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Defined in header <type_traits>
template< class T >
struct is_member_object_pointer;
 (ya que C + +11)
Si T es un puntero a objeto de miembro no estático, provee el miembro constante value true iguales. Para cualquier otro tipo, es value false .
Original:
If T is pointer to non-static member object, provides the member constant value equal true. For any other type, value is false.
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Contenido

Inherited from std::integral_constant

Member constants

value
[estático]
true si T is a pointer to member object , false lo contrario
Original:
true if T is a pointer to member object , false otherwise
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(público miembro constante estática)

Member functions

operator bool
convierte el objeto a bool, devuelve value
Original:
converts the object to bool, returns value
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(miembro público función)

Member types

Tipo
Original:
Type
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 Definition
value_type bool
type std::integral_constant<bool, value>

[editar] Posible implementación

template<class T>
struct is_member_object_pointer : std::integral_constant<
                                      bool,
                                      std::is_member_pointer<T>::value &&
                                      !std::is_member_function_pointer<T>::value
                                  > {};

[editar] Ejemplo

This section is incomplete
Reason: simplify 
#include <iostream>
#include <type_traits>
 
int main() {
    class cls {};
    std::cout << (std::is_member_object_pointer<int(cls::*)>::value
                     ? "T is member object pointer"
                     : "T is not a member object pointer") << '\n';
    std::cout << (std::is_member_object_pointer<int(cls::*)()>::value
                     ? "T is member object pointer"
                     : "T is not a member object pointer") << '\n';
}

Output: 

T is member object pointer
T is not a member object pointer

[editar] Ver también

(C++11)
Comprueba si un tipo es un tipo de puntero
Original:
checks if a type is a pointer type
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(clase de plantilla) [edit]
(C++11)
 checks if a type is a pointer to a non-static member function or object
(clase de plantilla) [edit]
(C++11)
Comprueba si un tipo es un puntero a una función miembro no estática
Original:
checks if a type is a pointer to a non-static member function
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(clase de plantilla) [edit]
Obtenido de «http://es.cppreference.com/mwiki/index.php?title=cpp/types/is_member_object_pointer&oldid=21851»