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std::is_pod

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C++
 
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integral_constant(C++11)
 
Defined in header <type_traits>
template< class T >
struct is_pod;
 (a partir do C++ 11)
Se T é um PODType ("plain tipo antigo"), isto é, tanto trivial e layout padrão, fornece o membro constante value true igual. Para qualquer outro tipo, é value false.
Original:
If T is a PODType ("plain old data type"), that is, both trivial and standard-layout, 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 a POD type , false contrário
Original:
true if T is a POD 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] Notas

Objetos de tipos POD são totalmente compatíveis com a linguagem de programação C.
Original:
Objects of POD types are fully compatible with the C programming language.
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[editar] Exemplo

#include <iostream>
#include <type_traits>
 
struct A {
    int m;
};
 
struct B {
    int m1;
private:
    int m2;
};
 
struct C {
    virtual void foo();
};
 
int main()
{
    std::cout << std::boolalpha;
    std::cout << std::is_pod<A>::value << '\n';
    std::cout << std::is_pod<B>::value << '\n';
    std::cout << std::is_pod<C>::value << '\n';
}

Output: 

true
false
false

[editar] Veja também

(C++11)
verifica se um tipo é o layout padrão tipo
Original:
checks if a type is standard-layout type
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(modelo de classe) [edit]
(C++11)
verifica se um tipo é trivial
Original:
checks if a type is trivial
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(modelo de classe) [edit]
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