From: Francis Moreau <francis.moro@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Re: Basic questions about elisp
Date: Sat, 7 Nov 2009 06:49:52 -0800 (PST) [thread overview]
Message-ID: <8229723a-5415-4a8e-b306-8e694f9cccb7@a32g2000yqm.googlegroups.com> (raw)
In-Reply-To: 878wejcpys.fsf@galatea.local
On 6 nov, 22:18, p...@informatimago.com (Pascal J. Bourguignon) wrote:
> Francis Moreau <francis.m...@gmail.com> writes:
> >>> When I wrote '(2), I suppose the elisp interpreter to create a new
> >>> list.
>
> >> It does so, but at read time. Not execution time.
>
> > Ah ok I see what you mean now.
>
> > That's a pretty important point, is this part covered by the elisp info ?
>
> Yes.
>
> > Actually the same stands for the implementation of the list, where
> > nconc, length... are O(n). I wouldn't have thought that lists are really
> > implemented by the car & cdr thing only.
>
> Why not? If people have been repeating for 50 years that lisp lists
> are implemented with cons, car and cdr...
Because I can understand there were some memory constraints 50 years
ago that force lisp lists to be as small as possible. But I would have
thought lisp lists (or (e)lisp) to evolve as computer memories did.
next prev parent reply other threads:[~2009-11-07 14:49 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-05 11:13 Basic questions about elisp Francis Moreau
2009-11-05 11:50 ` Lennart Borgman
[not found] ` <mailman.10118.1257421858.2239.help-gnu-emacs@gnu.org>
2009-11-05 12:07 ` Francis Moreau
2009-11-05 12:44 ` Lennart Borgman
2009-11-05 12:59 ` David Kastrup
2009-11-05 14:25 ` Francis Moreau
2009-11-05 14:37 ` Pascal J. Bourguignon
2009-11-05 14:58 ` Pascal J. Bourguignon
2009-11-05 12:57 ` tomas
[not found] ` <mailman.10122.1257425638.2239.help-gnu-emacs@gnu.org>
2009-11-05 14:29 ` Francis Moreau
2009-11-05 14:41 ` Pascal J. Bourguignon
2009-11-05 15:06 ` David Kastrup
2009-11-06 16:03 ` Francis Moreau
2009-11-06 16:49 ` David Kastrup
2009-11-06 20:53 ` Francis Moreau
2009-11-06 21:18 ` Pascal J. Bourguignon
2009-11-07 14:49 ` Francis Moreau [this message]
2009-11-07 17:50 ` Pascal J. Bourguignon
2009-11-08 9:46 ` tomas
[not found] ` <mailman.10266.1257674088.2239.help-gnu-emacs@gnu.org>
2009-11-09 20:51 ` Francis Moreau
2009-11-08 15:18 ` Francis Moreau
2009-11-08 16:58 ` tomas
2009-11-08 17:12 ` Pascal J. Bourguignon
2009-11-09 21:04 ` Francis Moreau
2009-11-10 12:11 ` Joost Kremers
2009-11-10 14:16 ` Francis Moreau
2009-11-10 18:53 ` David Kastrup
2009-11-06 5:06 ` Barry Margolin
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