The duration to shift the interval by.
std.datetime.date.DateTimeException this interval is empty or if the resulting interval would be invalid.
auto interval1 = Interval!Date(Date(1996, 1, 2), Date(2012, 4, 5)); auto interval2 = Interval!Date(Date(1996, 1, 2), Date(2012, 4, 5)); interval1.shift(dur!"days"(50)); assert(interval1 == Interval!Date(Date(1996, 2, 21), Date(2012, 5, 25))); interval2.shift(dur!"days"(-50)); assert(interval2 == Interval!Date(Date(1995, 11, 13), Date(2012, 2, 15)));
Shifts the interval forward or backwards in time by the given duration (a positive duration shifts the interval forward; a negative duration shifts it backward). Effectively, it does begin += duration and end += duration.