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std::is_compound

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C++
 
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Swap, forward and move
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is_compound(C++11)
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is_constructible
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is_assignable
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integral_constant(C++11)
 
Defined in header <type_traits>
template< class T >
struct is_compound;
 (ya que C + +11)
Si T es un tipo compuesto (es decir, matriz, función, objeto puntero, puntero de función, el puntero del objeto miembro, puntero a función miembro, de referencia, de clase, unión o enumeración, incluidas las variantes cv-calificados), establece en el miembro constante value true iguales. Para cualquier otro tipo, es value false .
Original:
If T is a compound type (that is, array, function, object pointer, function pointer, member object pointer, member function pointer, reference, class, union, or enumeration, including any cv-qualified variants), 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 compound type , false lo contrario
Original:
true if T is a compound type , 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] Notas

Tipos de compuestos son los tipos que son construidos de tipos fundamentales. Cualquier tipo C + + o es fundamental o compuesto .
Original:
Compound types are the types that are constructed from fundamental types. Any C++ type is either fundamental or compound.
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[editar] Posible implementación

template< class T >
struct is_compound : std::integral_constant<bool, !std::is_fundamental<T>::value> {};

[editar] Ejemplo

#include <iostream>
#include <type_traits>
 
int main() {
    class cls {};
    std::cout << (std::is_compound<cls>::value
                     ? "T is compound"
                     : "T is not a compound") << '\n';
    std::cout << (std::is_compound<int>::value
                     ? "T is compound"
                     : "T is not a compound") << '\n';
}

Output: 

T is compound
T is not a compound

[editar] Ver también

(C++11)
Comprueba si un tipo es el tipo fundamental
Original:
checks if a type is fundamental type
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(clase de plantilla) [edit]
(C++11)
Comprueba si un tipo es de tipo escalar
Original:
checks if a type is scalar type
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(clase de plantilla) [edit]
(C++11)
Comprueba si un tipo es tipo de objeto
Original:
checks if a type is object type
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(clase de plantilla) [edit]
(C++11)
Comprueba si un tipo es un tipo de matriz
Original:
checks if a type is an array type
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(clase de plantilla) [edit]
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