Difference between revisions of "Talk:H-99: Ninety-Nine Haskell Problems"
(Another proposal) |
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(defun decode-modified (list) |
(defun decode-modified (list) |
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| − | ( |
+ | (reduce #'append |
| − | (mapcar (lambda (item) |
+ | (mapcar (lambda (item) |
| − | (if (atom item) |
+ | (if (atom item) |
| − | item |
+ | (list item) |
| − | (make-list (car item) :initial-element (cadr item)))) |
+ | (make-list (car item) :initial-element (cadr item)))) |
| − | list))) |
+ | list))) |
-- roerd |
-- roerd |
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| + | I am planning on going through the questions and rewording them so that the argument order is different. Often the lisp solution has the reverse order as a standard Haskell solution. It seems like asking for the more curry friendly solution would teach good coding style. |
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| + | |||
| + | If you think you have a reasonable objection let me know.<br> |
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| + | --[[User:Davorak|Davorak]] 19:53, 15 December 2010 (UTC) |
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| + | |||
| + | Also I think it would be beneficial to change the example answers so that the functions that index lists naturally start at 0.<br> |
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| + | --[[User:Davorak|Davorak]] 20:15, 15 December 2010 (UTC) |
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Latest revision as of 20:15, 15 December 2010
What does "Lisp solution?" mean? Lots of them are listed "Yes", and lots are listed "No", but I can't detect a difference between these entries... -- dmwit
It's just whether or not there's a lisp solution available. If you go to the description of the problem, and click on the problem number, it'll either link you to actual lisp code, or a "not found" page. There are 25 of them which actually have lisp code available. -- chessguy
What is the meaning of that scoreboard? Even though there is no solution on the L-99 site, there may still exist a LISP solution, even a trivial one. And since that L-99 site is no wiki and this site is, the scoreboard seems just misleading to me.
Just an example for Problem 12:
(defun decode-modified (list)
(reduce #'append
(mapcar (lambda (item)
(if (atom item)
(list item)
(make-list (car item) :initial-element (cadr item))))
list)))
-- roerd
I am planning on going through the questions and rewording them so that the argument order is different. Often the lisp solution has the reverse order as a standard Haskell solution. It seems like asking for the more curry friendly solution would teach good coding style.
If you think you have a reasonable objection let me know.
--Davorak 19:53, 15 December 2010 (UTC)
Also I think it would be beneficial to change the example answers so that the functions that index lists naturally start at 0.
--Davorak 20:15, 15 December 2010 (UTC)