LispForum

Note that (I believe) it is impossible for a node with element E to exist unless also a leaf exists with that same element. Thus the latter scenario of the preceding paragraph can safely be excluded from consideration. (This assuming elements have all been inserted using the provided procedures and...

If you remove E from (:elm k :left E :right subtree) then the result is subtree. But what if the situation is like this: (:elmt E :left k :right subtree). *If N is returned, then the element was not found in the tree. It's this part that confuses me. It seems like N could be returned if elmt = E.

Hello, I'm a complete newbie to lisp, and I'm going through a tutorial and getting confused. I'm wondering if someone can help me out. The tutorial is here: http://www.cs.sfu.ca/CC/310/pwfong/Lisp/3/tutorial3.html, and the part I'm having trouble with is this: (defun BST-remove (B E) "Remove E ...

I guess you're right, it doesn't include an implementation. Fortunately, I had another lisp download in another folder, and after a bit of trial and error, I found an .exe in that folder that brings up an command line lisp interpreter. I actually realized I could just run this .exe without having to...

You're supposed to just type it directly at the "command prompt" I don't know how to start Lisp from the command prompt. Go to Settings => Set Lisp Path and navigate to your CL implementation. Choose the .exe file. The only .exe files I get are LispIDE.exe and unins000.exe. If I choose Li...

First of all, I know nothing about Common Lisp or any kind of Lisp. I am just begining to learn. So I downloaded LispIDE in order to have an environment in which I can experiment. I wrote a very simple program: (* 2 (cos 0) (+ 4 6)) which, according to this website, should print out 20.0. Well, I'm ...

Thanks everyone for your feedback. Sorry it took so long to reply.

Hello,

I am just beginning to learn LISP and I'm looking for a LISP compiler/interpreter that I can download and install (an environment in which I can practice programming in LISP). Can anyone point me in the right direction? I have Windows XP.