Likewise, I cut&paste into emacs console session. Thank you for fixing
this!
The wacky indenting indicates, to me, top down programming. I briefly
considered adopting the style but it doesn't work without extra thought.
Suppose, as I did, we follow the instructions to speed the code.
However we write these into a new file and load it all at once into a
new j session. This causes domain error, I presume because the
undefined names ELSE and WHEN that j takes as verbs become other parts
of speech. Loading the script that follows twice, or reordering it
fixes the trouble. The original script is an exquisite representation
of the algorithm.
AP =: ;@AllParts ELSE N WHEN (1:e.,)
N =: ,:@{.~
AllParts =: <@Parts"0 >:@i.
ELSE =: `
WHEN =: @.
Parts =: Add1 ELSE Ones WHEN <:
Ones =: < }. ] ,:@# 1:
Add1 =: 1: + - AP ]
AP =: AP f. M. NB. domain error
On Thu, 2011-07-07 at 12:00 +0800, [email protected] wrote:
>
> Message: 4
> Date: Wed, 6 Jul 2011 14:01:18 -0400
> From: Devon McCormick <[email protected]>
> Subject: Re: [Jchat]
> http://www.jsoftware.com/jwiki/Essays/AllPartitions
> To: Chat forum <[email protected]>
> Message-ID:
> <CAGdEmpEFmk6S6HAtJY7UdGM-R_4GoeYD5nKQibVh
> [email protected]>
> Content-Type: text/plain; charset=UTF-8
>
> I have no problem cutting and pasting this into a console session -
> running
> emacs - for both J6 and J7.
>
> BTW - does anyone understand the reason for the wacky indenting of the
> code
> at the top of this page?
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
