The interval to intersect with this interval.
assert(NegInfInterval!Date(Date(2012, 3, 1)).intersection( NegInfInterval!Date(Date(1999, 7, 6))) == NegInfInterval!Date(Date(1999, 7 , 6))); assert(NegInfInterval!Date(Date(2012, 3, 1)).intersection( NegInfInterval!Date(Date(2013, 1, 12))) == NegInfInterval!Date(Date(2012, 3 , 1)));
Returns the intersection of two intervals