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std:: is_error_code_enum <std::future_errc>

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std::future_errc
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is_error_code_enum
헤더에 정의됨 <future>
template <>
struct is_error_code_enum < std:: future_errc > : std:: true_type ;
(C++11부터)

std::future_errc 가 에러 코드 열거형임을 지정합니다. 이를 통해 std::error_code 의 자동 변환이 가능해집니다.

참고 항목

(C++11)
클래스를 error_code 열거형으로 식별함
(클래스 템플릿)