Brendon Towle wrote: > > def cons(a,b) > > return [a,b] > > should be: > return [a].extend(b)
I seem to remember that a cons joins two items, it doesn't grow a strait list. A lisp list is a special case of a binary tree. How would you build a tree structure with your cons? I think you are wrong here. > > def car(structure) > > return structure[0] > > > > def cdr(structure) > > return structure[1] > > should be: > return structure[1:] With your cons yes. With mine no, as there is only two elements in each array aka "cons cell". -- http://mail.python.org/mailman/listinfo/python-list
