w_a_x_man's articles:

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re: My opinion re LISP #2 14 10 (4/16/2013 3:49:42 PM) comp.lang.lisp Gareth McCaughan wrote: > Oh, and if we're playing the intuitive-appeal-to-novices > game, consider > > (loop for n from 1 upto 10 sum n) ==> 55 > > and try to find another language in which th... WJ

Re: simple lisp function #2 0 12 (4/9/2013 10:44:11 PM) comp.lang.lisp A monkey (Peter Seibel ) wrote: > Did someone say LOOP? > > (defun variations (x list) > (loop for cons on (cons nil list) collecting > (nconc (ldiff list (cdr cons)) (cons x (cdr cons))... WJ

Re: Excerise in Graham's ANSI Common Lisp 0 13 (3/8/2013 4:56:47 AM) comp.lang.lisp Rob "Peacock" Warnock wrote: > (defun hash-table-alist (table) > (let (result) > (do-hash (key value table result) > (push (cons key value) result)))) > > One can also do it... WJ

Re: efficiently accumulating values 0 15 (3/8/2013 4:28:58 AM) comp.lang.lisp Giorgos Keramidas wrote: > LOOP is clever enough to do this in a simpler way: > > CL-USER> (defun foo (num) > (* num 10)) > FOO > CL-USER> (loop for k below 10 > ... WJ

Re: How to write binary data to standard out? 0 15 (2/26/2013 8:46:38 PM) comp.lang.lisp Rob Warnock wrote: > Plain ol' MAP should also work: > > > (map 'vector 'char-code "Hello World!") > > #(72 101 108 108 111 32 87 111 114 108 100 33) Clojure: user=> (mapv int "hello") [... WJ

Re: Lis(t|p) comprehensions #2 0 14 (2/25/2013 8:50:14 PM) comp.lang.lisp Frank Buss wrote: > joswig@corporate-world.lisp.de wrote: > > > For combinations of this kind of stuff I really prefer the functional > > approach: > > CL-USER 5 > (remove-if-not 'oddp '(1 2 3)) > > (1... WJ

Re: With format, how to print a variable number of spaces #3 3 15 (2/24/2013 11:30:34 AM) comp.lang.lisp Frank Buss wrote: > > I have another 'format' question: say I have a list of key/value > > pairs, in an alist: > > '((foo 3) (bar 2) (baz 10)) > > > > Can I use format with the list iteration oper... WJ

Re: With format, how to print a variable number of spaces #2 2 10 (2/23/2013 3:07:21 AM) comp.lang.lisp Rob "Peacock" Warnock wrote: > Pascal Bourguignon wrote: > +--------------- > | Kent M Pitman writes: > | > So if you do: > | > (defun spaces (n) (format nil "~V{ ~}" n '(IGNORED))) > | > you'll ge... WJ

Re: With format, how to print a variable number of spaces 0 16 (2/23/2013 12:31:47 AM) comp.lang.lisp Rob "Peacock" Warnock wrote: > > (defparameter *digits* (apply 'concatenate 'string > (loop for i below 10 > collect "012345678... WJ

Re: Brevity vs. Lispicity 2 16 (2/22/2013 9:49:28 PM) comp.lang.lisp Bill Atkins wrote: > (defun occurrences (list) > (let (result) > (dolist (x list) > (if (assoc x result) > (incf (cdr (assoc x result))) > (push (cons x 1) resu... WJ

w_a_x_man's replies:

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Newbie question; why (cons (list 1 2) (list 3 4)) is ((1 2) 3 4) and not ((1 2) (3 4)) 17 15 (3/25/2013 8:15:03 PM) comp.lang.lisp Hi, I just started to learn LISP, and stumbled in SICP upon (cons (list 1 2) (list 3 4)) is evaluated to ((1 2) 3 4) I do not understand why this is not: ... gregor4819 (4)

concatenating 2 lists 10 16 (3/27/2013 11:53:53 AM) comp.lang.lisp Hello. Suppose I've two lists of symbols, for example: '(a b c d) '(1 2 3 4). I wan't to concatenate it: '(a1 b2 c3 d4). How can I do very simply & very quickly in cl? thanks. ... kelsar777 (5)

What is this dolist doing? #2 14 10 (4/2/2013 12:06:53 AM) comp.lang.lisp What is dolist doing on line #3? What is "n", "numbers" and "prod"? I'm not following _all_ of the flow of the logic of this method. http://bin.cakephp.org/view/1503298950 ... yoursurrogategod (101)

Using mapcar with fewer lists than function arguments 33 6 (4/12/2013 6:35:49 PM) comp.lang.lisp Noobish question. I've been working on a toy project as an excuse to learn Lisp, and I've com= e up with the following situation: I want to mapcar a function over some lists, but I don't have as many lis... grmann1123 (9)

re: My opinion re LISP #2 14 10 (4/16/2013 3:49:42 PM) comp.lang.lisp Gareth McCaughan wrote: > Oh, and if we're playing the intuitive-appeal-to-novices > game, consider > > (loop for n from 1 upto 10 sum n) ==> 55 > > and try to find another language in which th... w_a_x_man (2778)

De re and de dicto readings of a variable 7 3 (4/29/2013 9:57:18 PM) comp.lang.lisp Hi, I have a problem with which I am stuck (probably it is obvious). I have defined a defstruct like the following, where the slot-values are lists: CL-USER> (defstruct a (b '(1 2)) (c '(3 4)) (d '(5... feldspat (10)

What is symbolic compoutation? 7 3 (5/6/2013 5:22:46 PM) comp.lang.lisp I posted this question on SO: http://stackoverflow.com/questions/16395704/what-is-symbolic-computation/16401387?noredirect=1#16401387 , but there are only a few answers so far. Please help. ... solidius4747 (12)

newlisp 3 3 (5/8/2013 2:14:31 PM) comp.lang.lisp In the same vein as the thread about PicoLisp, does anyone here use newlisp and have any opinions on it? I am intrigued by its support for building guis right out of the box, although I should caveat tha... Milkman1 (6)

Racket 2 2 (5/10/2013 3:57:34 AM) comp.lang.lisp I've been playing with Racket more lately and I'm struggling with macros. define-syntax-rule is simple and beautiful compared to defmacro, but I'm st= ruggling to get more advanced functionality out of it. ... nbeenken (5)

Permuting array rows 13 2 (5/17/2013 7:15:52 AM) comp.lang.lisp I posted this to /r/common_lisp, but nobody seemed interested, so I thought I'd try this turf. I have some array rows I'd like to permute; I'd like a function/macro > (setf A (make-array '(3 6) :initial-... jasonsewall (12)