isLeapYear property

bool isLeapYear

• return true the first saturday of the month TODO :: date wont work with last month of the year returns true if date is between tow dates returns true if date year is leaap year

Implementation

// bool get isFirstSaturdayThisMonth =>
//     isSaturday &&
//     subtract(const Duration()).month ==
//         DateTime(year, month, day - DateTime.daysPerWeek).month;

// /// * return  [true] the first sunday of the month
// bool get isFirstSundayThisMonth =>
//     isSunday &&
//     month - 1 == DateTime(year, month, day - DateTime.daysPerWeek).month;

// /// * return   [true] the first monday of the month
// bool get isFirstMondayThisMonth =>
//     isMonday &&
//     month - 1 == DateTime(year, month, day - DateTime.daysPerWeek).month;

// /// * return   [true] the first tuesday of the month

// bool get isFirstTuesdayThisMonth =>
//     isTuesday &&
//     month - 1 == DateTime(year, month, day - DateTime.daysPerWeek).month;

// /// * return   [true] the first wednesday of the month
// bool get isFirstWednesdayThisMonth =>
//     isWednesday &&
//     month - 1 == DateTime(year, month, day - DateTime.daysPerWeek).month;

// /// * return   [true] the first thursday of the month
// bool get isFirstThursdayThisMonth =>
//     isThursday &&
//     month - 1 == DateTime(year, month, day - DateTime.daysPerWeek).month;

// /// * return   [true] the first friday of the month
// bool get isFirstFridayThisMonth =>
//     isFriday &&
//     month - 1 == DateTime(year, month, day - DateTime.daysPerWeek).month;

// bool get isLastSaturdayOfTheYear => day == DateTime.saturday;
// bool get isLastSundayOfTheYear => day == DateTime.sunday;
// bool get isLastMondayOfTheYear => day == DateTime.monday;
// bool get isLastTuesdayOfTheYear => day == DateTime.tuesday;
// bool get isLastWednesdayOfTheYear => day == DateTime.wednesday;
// bool get isLastThursdayOfTheYear => day == DateTime.thursday;
// bool get isLastFridayOfTheYear => day == DateTime.friday;

/// returns true if date is between tow dates
// bool isBetween(DateTime start, DateTime end) =>
//     start.isBefore(this) && end.isAfter(this);

/// returns true if date year is leaap year
bool get isLeapYear {
  return year % 4 == 0 && year % 100 != 0 || year % 400 == 0;
}