Thank you Diego for your feedback. For the moment the enum flag is not natively integrated in Dart, I agree with you, it will be a great option like on C#.

Thank you for your comment. If the enum is nullable it can't be used without the null aware operator '?', for me there is not need to add a case for that, you can directly use: final String weekDayShortName = weekDay?.shortName?? '';

Thank you Mack for your feedback :)