From: Kevin Rodgers <kevin.d.rodgers@gmail.com>
To: emacs-devel@gnu.org
Subject: Re: can `shuffle-vector' be moved?
Date: Fri, 13 May 2011 00:00:53 -0600 [thread overview]
Message-ID: <iqihdr$gnk$1@dough.gmane.org> (raw)
In-Reply-To: <87fwojw91r.fsf@lifelogs.com>
On 5/12/11 9:53 PM, Ted Zlatanov wrote:
> On Fri, 13 May 2011 10:03:57 +0800 Leo<sdl.web@gmail.com> wrote:
>
> L> On 2011-05-13 03:58 +0800, Ted Zlatanov wrote:
>>> Also this loop call from Pascal Bourguignon is a nice CL alternative to
>>> `shuffle-vector', though it uses the same algorithm:
>>>
>>> (defun shuffle (vector)
>>> "Re-orders randomly the vector."
>>> (loop
>>> for i from (1- (length vector)) downto 1
>>> do (rotatef (aref vector i) (aref vector (random i)))))
>>>
>>> Can it go into cl-macs.el?
>
> L> We should have one version and not in cl-macs.el.
>
> Why? There are many functions in cl-macs.el that have analogues in
> plain ELisp. If anything I would drop `shuffle-vector' :)
>
> L> `shuffle' is not in common lisp.
>
> I didn't say it was. cl-macs.el is not Common Lisp by any means and IMO
> should not be treated as a clone of it.
From cl-macs.el:
;; These are extensions to Emacs Lisp that provide a degree of
;; Common Lisp compatibility, beyond what is already built-in
;; in Emacs Lisp.
...
;; This file contains the portions of the Common Lisp extensions
;; package which should be autoloaded, but need only be present
;; if the compiler or interpreter is used---this file is not
;; necessary for executing compiled code.
--
Kevin Rodgers
Denver, Colorado, USA
next prev parent reply other threads:[~2011-05-13 6:00 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-12 19:58 can `shuffle-vector' be moved? Ted Zlatanov
2011-05-13 2:03 ` Leo
2011-05-13 2:10 ` Stefan Monnier
2011-05-13 3:49 ` Ted Zlatanov
2011-05-13 13:57 ` Stefan Monnier
2011-05-13 3:53 ` Ted Zlatanov
2011-05-13 6:00 ` Kevin Rodgers [this message]
2011-05-13 14:48 ` Ted Zlatanov
2011-05-13 15:26 ` Stefan Monnier
2011-05-13 16:22 ` Ted Zlatanov
2011-05-13 16:47 ` Stefan Monnier
2011-05-13 16:51 ` Ted Zlatanov
2011-05-13 6:19 ` Thierry Volpiatto
2011-05-13 14:00 ` Stefan Monnier
2011-05-13 14:38 ` Ted Zlatanov
2011-05-13 17:13 ` Thierry Volpiatto
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