From: jfarr at real.com (Jonothan Farr) Date: Fri, 23 Apr 1999 15:29:38 -0700 Subject: Efficient List Subtraction References: <3720EF73.CA7DDEFF@Colorado.edu> Message-ID: X-UID: 203 I have also longed for built in support for the union and intersection of two sequences. Perhaps: list.union(list2) and list.intersection(list2) ?? insert-clever-witty-long-hyphenated-phrase-ly y'rs --jfarr