LispForum

Thanks for replying! I understand your walk through of the recursion, it is obviously correct, but seems quite counter-intuitive. At some point state is (inc (inc (inc (inc (z 0 9))))) and then the "If" resolves to y, which seemed to me to be the culmination and the answer is 9! Since the ...

I am long time programmer wanting to learn LISP (Clojure), watching the 1986 MIT class on the "Structure and Interpretation of Computer Programs" on youtube. 23 minutes 56 seconds into the lecture 1B ;; https://www.youtube.com/watch?v=dlbMuv-jix8 He gives a scheme recursive program to add ...