std::is_error_condition_enum - cppreference.com

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template< class T > struct is_error_condition_enum;		(since C++11)

If T is an error condition enum (such as std::errc), this template provides the member constant value equal true. For any other type, value is false.

This template may be specialized for a program-defined type to indicate that the type is eligible for std::error_condition implicit conversions.

Helper variable template

template< class T > inline constexpr bool is_error_condition_enum_v = is_error_condition_enum<T>::value;		(since C++17)

Inherited from std::integral_constant

Member constants

true if T is an error condition enum, false otherwise
(public static member constant)

Member functions

	converts the object to `bool`, returns `value` (public member function)
	returns `value` (public member function)

Member types