subtract method
Returns a new EtDatetime instance with duration
subtracted from current instance.
EtDatetime today = new EtDatetime.now();
EtDatetime fiftyDaysAgo = today.subtract(new Duration(days: 50));
Notice that the duration being subtracted is actually 50 * 24 * 60 * 60
seconds. If the resulting EtDatetime
has a different daylight saving offset
than this
, then the result won't have the same time-of-day as this
, and
may not even hit the calendar date 50 days earlier.
Be careful when working with dates in local time.
Implementation
EtDatetime subtract(Duration duration) {
return EtDatetime.fromMillisecondsSinceEpoch(
moment - duration.inMilliseconds);
}