From: Juanma Barranquero <lekktu@gmail.com>
To: emacs-devel@gnu.org
Subject: Re: `remove-duplicates'
Date: Sun, 10 Jul 2011 17:27:50 +0200 [thread overview]
Message-ID: <CAAeL0ST=+SE32aaMiC1xC9J_pg=gwsrR3cwUAuGgoANBCuep_A@mail.gmail.com> (raw)
In-Reply-To: <m3wrfqb2gs.fsf@quimbies.gnus.org>
On Sun, Jul 10, 2011 at 17:05, Lars Magne Ingebrigtsen <larsi@gnus.org> wrote:
> Would anybody mind if I add a simple version of `remove-duplicates' to
> subr.el? I'm tired of rewriting the same loop...
I think there are also quite a few cases in the sources of destructive
deleting of *consecutive* duplicates. I once proposed this:
(defun uniqify (list)
"Destructively remove consecutive `equal' duplicates from LIST.
Store the result in LIST and return it. LIST must be a proper list."
(let ((l list))
(while (cdr l)
(if (equal (car l) (cadr l))
(setcdr l (cddr l))
(setq l (cdr l))))
list))
Juanma
next prev parent reply other threads:[~2011-07-10 15:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-10 15:05 `remove-duplicates' Lars Magne Ingebrigtsen
2011-07-10 15:27 ` Juanma Barranquero [this message]
2011-07-10 16:06 ` `remove-duplicates' David Kastrup
2011-07-10 16:37 ` `remove-duplicates' Drew Adams
2011-07-12 3:48 ` `remove-duplicates' Stefan Monnier
2011-07-12 7:22 ` `remove-duplicates' Lars Magne Ingebrigtsen
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