LispForum

I've wote something .It's working, but I'd like to know how to re-write this code without using setq ? (defun search_room (point labirint) (cond ((null labirint) nil) ((eql (caar labirint) point) (second (car labirint))) (t (search_room point (cdr labirint))))) (setq way '(in)) (defun search_path (...

Perl's regular expressions are not regular expressions in the formal sense. This means that they cannot be implemented be implemented by finite state machines Does that mean they're more flexible than normal regular expressions - they can classify context-free/sensitive languages? Many features fou...

Couldn't you in your reader macro function make a copy of the current readtable, modify the characters you need, and then dynamically bind it to *readtable* so once your reader macro function exits, the readtable will be returned to what it was before?

If you can't depend on it and you want to be cross-implementation, then it basically isn't supported. This is a whole other can of worms, though. Yup. See also: threading, sockets, unicode, etc. ;) This is why we need to come up with a CLv2. A de facto or community-driven standard composed of compa...

@qbg: I'm using uppercase since that's what the examples I've read use.I know it's not really necessary but it adds a bit of readability, since I don't have a good IDE for writing code in LISP. The parantheses are aligned like that to add some more ease in reading the code by trying to order it in ...

First, about the way you are formatting your code: 1) Why are you using uppercase for the symbols? 2) Those closing parens feel lonely on their own line Now, what are you trying to do in incr? Are you wanting a function that is something like: (defun incr (list n) "Increment each element in the...

If you have ever watched the SICP video lectures, then you might remember the scene where Sussman labels the two hands drawing each other EVAL and APPLY, so apply is a rather basic function. You could write your own apply, but at that point you would probably end up writing a lot of a lisp implement...

I was thinking today, and came up with a better implementation for defun*: (defparameter *%function-types* (make-hash-table :test #'eq)) (defmacro defun* (name limited-lambda-list &body body) "Like defun, but saves type information. Special lambda lists (&optional, &key, etc.) not s...

For Clozure CL, you can browse the repository online.

Also, when getting wx86cl.exe, remember to get wx86cl.image and put it in the same directory.

I use paredit in Emacs a lot. I'm constantly moving code around using sexpr-level editing commands and I've come to love parens for that. IMO, saving a character here or there, particularly a character that paredit automatically inserts and deletes for me, is not really useful. (:rant "I don't...