If order doesn't matter and it would be okay for duplicates *within* a list to be deleted, you might make use of
* Lists can be converted to sets, via list->set and back again * There are many set methods to yield unions, intersections and differences between sets. See https://docs.racket-lang.org/reference/sets.html. That should be a good start. Follow up if you get stuck. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.