is_enum 클래스

Tests if type is an enumeration.

template<class Ty>
    struct is_enum;

매개 변수

• Ty
  The type to query.

설명

An instance of the type predicate holds true if the type Ty is an enumeration type or a cv-qualified form of an enumeration type, otherwise it holds false.

예제

 

// std_tr1__type_traits__is_enum.cpp 
// compile with: /EHsc 
#include <type_traits> 
#include <iostream> 
 
struct trivial 
    { 
    int val; 
    }; 
 
enum color { 
    red, greed, blue}; 
 
int main() 
    { 
    std::cout << "is_enum<trivial> == " << std::boolalpha 
        << std::is_enum<trivial>::value << std::endl; 
    std::cout << "is_enum<color> == " << std::boolalpha 
        << std::is_enum<color>::value << std::endl; 
    std::cout << "is_enum<int> == " << std::boolalpha 
        << std::is_enum<int>::value << std::endl; 
 
    return (0); 
    } 
 

요구 사항

헤더: <type_traits>

네임스페이스: std

참고 항목

참조

<type_traits>

is_integral 클래스

기타 리소스

<type_traits> 멤버