The interval to check for against this interval.
std.datetime.date.DateTimeException if the given interval is empty.
assert(!PosInfInterval!Date(Date(1996, 1, 2)).isBefore( Interval!Date(Date(1990, 7, 6), Date(2000, 8, 2)))); assert(!PosInfInterval!Date(Date(1996, 1, 2)).isBefore( Interval!Date(Date(1999, 1, 12), Date(2011, 9, 17))));
Whether this interval is before the given interval and does not intersect it.
Always returns false (unless the given interval is empty) because an interval going to positive infinity can never be before any other interval.