19 Diagnostics library [diagnostics]

19.5 System error support [syserr]

19.5.3 Class error_condition [syserr.errcondition] Class error_condition modifiers [syserr.errcondition.modifiers]

void assign(int val, const error_category& cat) noexcept;

Postconditions: val_ == val and cat_ == &cat.

template <class ErrorConditionEnum> error_condition& operator=(ErrorConditionEnum e) noexcept;

Postcondition: *this == make_error_condition(e).

Returns: *this.

Remarks: This operator shall not participate in overload resolution unless is_error_condition_enum<ErrorConditionEnum>::value is true.

void clear() noexcept;

Postconditions: value() == 0 and category() == generic_category().