The interval to intersect with this interval.
assert(PosInfInterval!Date(Date(1996, 1, 2)).intersection( PosInfInterval!Date(Date(1990, 7, 6))) == PosInfInterval!Date(Date(1996, 1 , 2))); assert(PosInfInterval!Date(Date(1996, 1, 2)).intersection( PosInfInterval!Date(Date(1999, 1, 12))) == PosInfInterval!Date(Date(1999, 1 , 12)));
Returns the intersection of two intervals