std::is_pod
De cppreference.com
<metanoindex/>
<tbody> </tbody>| Definido no cabeçalho <type_traits>
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template< class T > struct is_pod; |
(desde 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.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Herdado de 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 The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (membro estático público constante) |
Member functions
operator bool |
converte o objeto em bool, retorna value Original: converts the object to bool, returns value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função pública membro) |
Member types
Tipo
Original: Type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Definition |
value_type
|
bool
|
type
|
std::integral_constant<bool, value>
|
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.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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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';
}
Saída:
true
false
false