clampBetween method

DateTime clampBetween(DateTime start, DateTime end)

Clamps this DateTime between start and end.

Returns start if this is before the range, end if after, or this if it already falls within the range.

Throws ArgumentError if start is after end.

Implementation

DateTime clampBetween(DateTime start, DateTime end) {
  if (start.isAfter(end)) {
    throw ArgumentError(
      'Start date ($start) must be before or equal to end date ($end)',
    );
  }
  if (isBefore(start)) return start;
  if (isAfter(end)) return end;
  return this;
}