std::is_error_condition_enum

Defined in header `<system_error>`
template< class T > struct is_error_condition_enum;		(since C++11)

If T is an error condition enum, this template provides the member constant value equal true. For any other type, value is false.

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

The following class of the standard library is an error condition enum: std::errc.

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

value

[static]

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

operator bool	converts the object to `bool`, returns `value` (public member function)
operator() (C++14)	returns `value` (public member function)

Type	Definition
`value_type`	`bool`
`type`	`std::integral_constant<bool, value>`