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std::add_cv, std::add_const, std::add_volatile

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Basic types
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add_cvadd_constadd_volatile
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Definido en la cabecera <type_traits>
template< class T >
struct add_cv;
(1) (desde C++11)
template< class T >
struct add_const;
(2) (desde C++11)
template< class T >
struct add_volatile;
(3) (desde C++11)

Provides the member typedef type which is the same as T, except it has a cv-qualifier added (unless T is a function, a reference, or already has this cv-qualifier)

1) adds both const and volatile

2) adds const

3) adds volatile

Contenido

[editar] Tipos de miembros

Nombre
Original:
Name
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Definition
type the type T with the cv-qualifier

[editar] Posible implementación

template< class T >
struct add_cv {
    typedef typename std::add_volatile<typename std::add_const<T>::type>::type type;
};
 
template< class T> struct add_const { typedef const T type; };
 
template< class T> struct add_volatile { typedef volatile T type; };

[editar] Ejemplo

[editar] Ver también

(C++11)
Comprueba si un tipo es const-calificado
Original:
checks if a type is const-qualified
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(plantilla de clase) [editar]
Comprueba si un tipo es volátil calificado
Original:
checks if a type is volatile-qualified
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(plantilla de clase) [editar]
elimina const y / o prescriptores volatile del tipo dado
Original:
removes const or/and volatile specifiers from the given type
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(plantilla de clase) [editar]