(examples-for -
("returns elements of first that are not in second" (- '(a b c e) '(a b d)) (c e)) ("returns all of first if second is nil" (- '(a b c) nil) (a b c)))
(examples-for -
("returns elements of first that are not in second" (- '(a b c e) '(a b d)) (c e)) ("returns all of first if second is nil" (- '(a b c) nil) (a b c)))