Comparing only dates of DateTimes in Dart

Question

I need to store and compare dates (without times) in my app, without caring about time zones.
I can see three solutions to this:

1. (date1.year == da

Answer 1

I am using this function to calculate the difference in days.

Comparing dates is tricky as the result depends not just on the timestamps but also the timezone of the user.

int diffInDays (DateTime date1, DateTime date2) {
    return ((date1.difference(date2) - Duration(hours: date1.hour) + Duration(hours: date2.hour)).inHours / 24).round();
}