The interval to check for against this interval.
std.datetime.date.DateTimeException if the given interval is empty
assert(!NegInfInterval!Date(Date(2012, 3, 1)).isBefore( Interval!Date(Date(1990, 7, 6), Date(2000, 8, 2)))); assert(!NegInfInterval!Date(Date(2012, 3, 1)).isBefore( Interval!Date(Date(1999, 1, 12), Date(2011, 9, 17)))); assert(NegInfInterval!Date(Date(2012, 3, 1)).isBefore( Interval!Date(Date(2022, 10, 19), Date(2027, 6, 3))));
Whether this interval is before the given interval and does not intersect it.