From: "Pascal J. Bourguignon" <pjb@informatimago.com>
To: help-gnu-emacs@gnu.org
Subject: Re: Lexical binding and macros.
Date: Sun, 12 Dec 2010 18:23:25 +0100 [thread overview]
Message-ID: <87r5dmkir6.fsf@kuiper.lan.informatimago.com> (raw)
In-Reply-To: dfc52c9e-62da-4458-ac0f-9753c0b473b6@m7g2000vbn.googlegroups.com
LanX <lanx.perl@googlemail.com> writes:
> On 12 Dez., 05:10, Barry Margolin <bar...@alum.mit.edu> wrote:
>> In article <mailman.40.1292017369.4804.help-gnu-em...@gnu.org>,
>> Alin Soare <alins...@voila.fr> wrote:
>>
>> > Are the macros and closures equivalent ?
>>
>> No. Emacs Lisp has macros, it doesn't have closures. But in dialects
>> of Lisp that have both, they're completely different.
>
>
> ehm ... isn't "lexical-let" from the common lisp extension supposed to
> support closures?
They're not really closures. Closures are equivalent to objects, so
you can simulate them by creating a kind of object, and this is what
lexical-let does. But given emacs lisp VM, it cannot do it quite
efficiently.
--
__Pascal Bourguignon__ http://www.informatimago.com/
A bad day in () is better than a good day in {}.
next prev parent reply other threads:[~2010-12-12 17:23 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.40.1292017369.4804.help-gnu-emacs@gnu.org>
2010-12-12 4:10 ` Lexical binding and macros Barry Margolin
2010-12-12 17:14 ` LanX
2010-12-12 17:23 ` Pascal J. Bourguignon [this message]
2010-12-15 4:24 ` Stefan Monnier
2010-12-15 9:15 ` Elena
2010-12-15 12:38 ` Pascal J. Bourguignon
2010-12-15 15:40 ` Stefan Monnier
2010-12-15 16:16 ` David Kastrup
2010-12-15 17:37 ` Pascal J. Bourguignon
2010-12-15 17:54 ` Elena
2010-12-16 21:59 ` Stefan Monnier
2010-12-10 21:42 Alin Soare
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87r5dmkir6.fsf@kuiper.lan.informatimago.com \
--to=pjb@informatimago.com \
--cc=help-gnu-emacs@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.