It's perfectly easy to write imperative code in CL. You have objects, you have vectors, you have every control structure operator ever conceived except CALL/CC

It's perfectly easy to write imperative code in CL. You have objects, you have vectors, you have every control structure operator ever conceived except CALL/CC, ... what else do you need? On the other hand, if you want to write more functionally, CL also now has shared immutable data structures. Check out FSet: http://www.ergy.com/FSet.html http://www.ergy.com/FSet.html