HDate constructor

HDate(
  1. int year,
  2. int month,
  3. int day
)

Construct from basic fields

Implementation

factory HDate(int year, int month, int day) {
  if (year < 1900) throw FormatException("Invalid year", year);
  if (month < 1 || month > 12) {
    throw FormatException("Invalid month", month);
  }
  if (day < 1 || day > 31) throw FormatException("Invalid day", day);
  return HDate._(year, month, day);
}