From: Stephen Berman <stephen.berman@gmx.net>
To: emacs-devel@gnu.org
Cc: Stefan Monnier <monnier@iro.umontreal.ca>
Subject: Re: New version of todo-mode.el (announcement + user guide)
Date: Wed, 12 Jun 2013 23:38:37 +0200 [thread overview]
Message-ID: <874nd3dn6q.fsf@rosalinde.fritz.box> (raw)
In-Reply-To: <854nd32mz4.fsf@inode.at> (Wolfgang Jenkner's message of "Wed, 12 Jun 2013 20:30:45 +0200")
On Wed, 12 Jun 2013 20:30:45 +0200 Wolfgang Jenkner <wjenkner@inode.at> wrote:
> On Tue, Jun 11 2013, Stephen Berman wrote:
>
>> - The code makes use of a powerset function, which Emacs doesn't have.
>> I tried but couldn't come up with my own algorithm but found a
>> recursive Common Lisp implementation and an iterative one in C
>
> The straightforward recursive implementation can be rewritten as an
> iterative one by conceptually doing left- instead of right-folding.
>
> (defun my-powerset (list)
> "Return the powerset of LIST."
> (let ((powerset (list nil)))
> (dolist (elt list (mapcar 'reverse powerset))
> (nconc powerset (mapcar (apply-partially 'cons elt) powerset)))))
This is nice. Maybe you could get it added to Emacs and then I could
just invoke it. Or if the mainainers don't want a powerset function,
would you be willing to contribute it to my package, if the ones I used
aren't usable for copyright reasons?
Steve Berman
next prev parent reply other threads:[~2013-06-12 21:38 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-09 23:31 New version of todo-mode.el (announcement + user guide) Stephen Berman
2013-06-10 13:24 ` Bastien
2013-06-10 14:35 ` Stephen Berman
2013-06-10 14:49 ` Bastien
2013-06-10 20:51 ` New version of todo-mode.el (code) Stephen Berman
2013-08-30 18:31 ` Jambunathan K
2013-09-08 21:09 ` Stephen Berman
2013-06-10 14:52 ` New version of todo-mode.el (announcement + user guide) Óscar Fuentes
2013-06-10 20:52 ` Stephen Berman
2013-06-11 0:20 ` Stefan Monnier
2013-06-11 18:36 ` Stephen Berman
2013-06-11 21:48 ` Stefan Monnier
2013-06-12 21:37 ` Stephen Berman
2013-06-13 1:06 ` Stefan Monnier
2013-06-13 20:53 ` Stephen Berman
2013-06-12 17:28 ` Glenn Morris
2013-06-12 21:26 ` Stefan Monnier
2013-06-12 21:37 ` Stephen Berman
2013-06-13 1:18 ` Stefan Monnier
2013-06-13 20:53 ` Stephen Berman
2013-06-14 0:21 ` Stefan Monnier
2013-06-14 21:37 ` Stephen Berman
2013-06-15 0:40 ` Glenn Morris
2013-06-15 1:49 ` Stefan Monnier
2013-06-15 12:52 ` Stephen Berman
2013-06-16 0:44 ` Stefan Monnier
2013-06-16 22:52 ` Stephen Berman
2013-06-17 0:37 ` Stefan Monnier
2013-06-17 19:50 ` Glenn Morris
2013-06-17 22:33 ` Stephen Berman
2013-06-12 18:30 ` Wolfgang Jenkner
2013-06-12 21:38 ` Stephen Berman [this message]
2013-06-13 1:24 ` Wolfgang Jenkner
2013-06-13 20:54 ` Stephen Berman
2013-06-13 10:59 ` Vitalie Spinu
2013-06-13 20:54 ` Stephen Berman
2013-08-31 3:55 ` Jambunathan K
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