CL-USER> (set-difference '(1 2 3 4 5) '(3 4))
(5 2 1)
There is no guarantee that the order of elements in the result will reflect the ordering of the arguments in any particular way. The result list may share cells with, or be eq to, either of list-1 or list-2, if appropriate.
Users browsing this forum: No registered users and 6 guests