LispForum

I haven't had time to look right yet, but how does it compare to using mod-lisp? I'm guessing more portable to other web servers --- would it be faster? mod-lisp has really easy communication -- is this harder or simpler?

@trillioneyes -- The problem isn't in how the list is built, but due to the reuse of (y 1) in many parts of it. Take a look at this: (in-package :cl-user) (defun product (fn a b) (mapcan #'(lambda (x) (mapcar #'(lambda (y) (funcall fn x y)) b)) a)) (defvar *first* '((1 (X 1)) (1 (Y 1)))) (defvar *se...

Are list1 and list2 just lists of atoms? If so, then the result is fresh, there should be no shared structure. When you alter a part of the results, only that part of the result should change. Some destructive alterations can be a bit tricky to use for example: (setf *a* '((a b c) (3 2 1) (four five...

Different strokes for different folks, but I would have found that tedious and painful. LOGO is beautiful, because once you write a few routines you can use those to draw stick figures and other simple objects, and if you have something more complete at your disposal (like SDL gives) you can grow f...

I think Duke's idea is a good one (if you have the time). I discovered programming through Basic, because I could put it into mode 13h and draw pixels. I think pixel plotting is probably an easier starting point than rotation, recursion and line drawing. Were it me, I'd probably use SDL to create a ...

I got a response back from SBCL maintainters: Reading the source (or the disassembly, which you might find more transparent), you're supposed to pass a full word to the *-fill functions. For instance, you could pass (* #xAD #x0101010101010101) instead of #xAD. The ub8, ub16, etc. variants are still ...

It seems SBCL on x64 is byte-alignment sensitive. I've had to change my system-area-ub32-copy's over to system-area-ub8-copy to get my tests to pass. I'm running SBCL 1.0.44.gentoo-r0. Just a heads up for anybody who loves system-area-pointers as much as I do.

This code uses C to malloc 32 bytes of memory. Then I use system-area-ub32-copy and system-area-ub32-fill. The behavior of FILL is incorrect I think (in these tests, I think it should give the same output as the copying). (defvar *sap* (alien-funcall (extern-alien "malloc" (function system...

According to the Xlisp documentation, (format t "a string") should print the string. The reason I had you add format statements everywhere was so that we could trace the flow of execution. If XPlus isn't printing the format statements, and you don't know why, you should probably seek face ...

How does that look? It would give you a compilation error because (state) isn't a function [hint: it's a variable]. Heres what I want you to do. Add, as the first line, this line of code to every function: (format t "~%Function: xxx") Replace xxx with the name of the function. Then when y...