std::is_integral - cppreference.com

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Elemento definito nell'header `<type_traits>`

`template< class T > struct is_integral;`		(dal C++11)

Se T è un tipo integrale (bool, char, char16_t, char32_t, wchar_t, short, int, long, long long, incluso qualsiasi segno, senza segno, e cv-qualificati varianti), fornisce il membro costante value true uguali. Per qualsiasi altro tipo, è 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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Inherited from std::integral_constant

Member constants


	`true` se `T` is an integral type , `false` altrimenti Original: `true` if `T` is an integral 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. (pubblico membro statico costante)

Member functions


	converte l'oggetto in `bool`, restituisce `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. (metodo pubblico)

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>`

Esempio

#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:

Vedi anche


is_integer [statico]	identifica i tipi interi Original: identifies integer types The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (pubblico of `std::numeric_limits` membro statico costante) [modifica]

is_floating_point (C++11)	Verifica se un tipo è tipo a virgola mobile Original: checks if a type is floating-point type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (classe template) [modifica]

is_arithmetic (C++11)	Verifica se un tipo è di tipo aritmetico Original: checks if a type is arithmetic type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (classe template) [modifica]