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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;
 (a partir do C++ 11)
Se T é um tipo integral (bool, char, char16_t, char32_t, wchar_t, short, int, long, long long, incluindo qualquer assinado, não assinado, e cv qualificados variantes), fornece o membro constante value true igual. Para qualquer outro tipo, é 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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Índice

Inherited from std::integral_constant

Member constants

value
[estática]
true se T is an integral type , false contrário
Original:
true if T is an integral type , false otherwise
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(membro estático público constante)

Member functions

operator bool
converte o objeto em bool, retorna value
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converts the object to bool, returns value
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(função pública membro)

Member types

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

[editar] Exemplo

#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] Veja também

[estática]
identifica os tipos inteiros
Original:
identifies integer types
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(of std::numeric_limits membro estático público constante) [edit]
(C++11)
verifica se um tipo é tipo de ponto flutuante
Original:
checks if a type is floating-point type
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(modelo de classe) [edit]
(C++11)
verifica se um tipo é o tipo de aritmética
Original:
checks if a type is arithmetic type
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(modelo de classe) [edit]
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