getDaysInMonth<T> static method

Implementation

static List<T> getDaysInMonth<T>(int year, int month) {
  const List<int> allMonthDays = <int>[31, -1, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
  late final int daysInMonth;

  if (month == DateTime.february) {
    final bool isLeapYear = (year % 4 == 0) && (year % 100 != 0) || (year % 400 == 0);
    daysInMonth = isLeapYear ? 29 : 28;
  } else {
    daysInMonth = allMonthDays[month - 1];
  }

  return List<T>.generate(daysInMonth, (index) {
    if (T == DateTime) {
      return DateTime(year, month, index + 1) as T;
    } else {
      return (index + 1) as T;
    }
  });
}