LispForum

Hi, I'm incredibly new to Lisp and I've got to write a program that calculates the depth of an expression. Here's what I've got so far: (DEFUN depth (L) (IF (NIL L) 0) (IF (NIL (SECOND L)) 0) (IF (ATOM (SECOND L)) (1+depth(CDR L))) ) What it's supposed to do is return 0 if the list L is empty or onl...