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std::is_integral

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C++
 
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integral_constant(C++11)
 
Defined in header <type_traits>
template< class T >
struct is_integral;
 (ya que C + +11)
Si T es un tipo entero (bool, char, char16_t, char32_t, wchar_t, short, int, long, long long, incluyendo cualquier firma sin firmar, y variantes cv-calificados), establece en el miembro constante value true iguales. Para cualquier otro tipo, es value false .
Original:
If T is an integral type (bool, char, char16_t, char32_t, wchar_t, short, int, long, long long, including any signed, unsigned, and 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 an integral type , false lo contrario
Original:
true if T is an integral 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] Ejemplo

#include <iostream>
#include <type_traits>
 
class A {};
 
int main() 
{
    std::cout << std::boolalpha;
    std::cout << std::is_integral<A>::value << '\n';
    std::cout << std::is_integral<float>::value << '\n';
    std::cout << std::is_integral<int>::value << '\n';
}

Output: 

false
false
true

[editar] Ver también

[estático]
identifica los tipos enteros
Original:
identifies integer types
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(of std::numeric_limits público miembro constante estática) [edit]
(C++11)
Comprueba si un tipo es tipo de punto flotante
Original:
checks if a type is floating-point type
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(clase de plantilla) [edit]
(C++11)
Comprueba si un tipo es de tipo aritmético
Original:
checks if a type is arithmetic type
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(clase de plantilla) [edit]
Obtenido de «http://es.cppreference.com/mwiki/index.php?title=cpp/types/is_integral&oldid=21885»