unofficial mirror of emacs-devel@gnu.org 
 help / color / mirror / code / Atom feed
From: Miles Bader <miles.bader@necel.com>
To: emacs-devel@gnu.org
Subject: Re: using empty_string as the only "" string
Date: Wed, 25 Apr 2007 14:49:57 +0900	[thread overview]
Message-ID: <buohcr56m0q.fsf@dhapc248.dev.necel.com> (raw)
In-Reply-To: 462EE947.000007.15251@camay.yandex.ru

"dmantipov" <dmantipov@yandex.ru> writes:
> All CLs I've installed (clisp, cmucl and franz) gives (eq 0 0) => t and
> (eq "" "") => nil. But a) we can tweak 'eq' to handle this special case
> (looks poor, but just to purify the language)

No, eq should not be "tweaked" (especially for something so silly as the
current discussion) -- it's supposed to be fast and straightforward, and
as long as it does the right thing in those cases where its behavior
_is_ defined, who cares if it reveals implementation idiosyncrasies in
case where it's not?  Some things in lisp (CL or otherwise) are defined
narrowly, but not everything is, and that's ok.

-Miles
-- 
We are all lying in the gutter, but some of us are looking at the stars.
-Oscar Wilde

  reply	other threads:[~2007-04-25  5:49 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-04-25  5:38 using empty_string as the only "" string dmantipov
2007-04-25  5:49 ` Miles Bader [this message]
2007-04-25 11:50 ` Juanma Barranquero
2007-04-25 11:56 ` Kenichi Handa
2007-04-25 13:22   ` Dmitry Antipov
2007-04-25 16:07     ` Stefan Monnier
2007-04-26  4:23 ` Richard Stallman
2007-04-26 13:03   ` Dmitry Antipov
2007-04-27  6:00     ` Richard Stallman
2007-04-27 10:04       ` Dmitry Antipov
2007-04-27 10:29         ` David Kastrup
2007-04-28  4:06         ` Richard Stallman
2007-04-28  8:54           ` Dmitry Antipov
2007-04-28 18:35             ` Richard Stallman
2007-06-05 15:43               ` Juanma Barranquero
2007-06-05 19:17                 ` Richard Stallman
2007-06-05 19:45                   ` Juanma Barranquero
2007-06-06  1:17                     ` Stefan Monnier
2007-06-06 11:04                       ` Juanma Barranquero
2007-06-06 22:09                         ` Richard Stallman
2007-06-08 15:49                           ` Juanma Barranquero
2007-06-08 19:16                             ` Stefan Monnier
  -- strict thread matches above, loose matches on Subject: below --
2007-04-24 16:32 Using " Dmitry Antipov
2007-04-24 17:05 ` Juanma Barranquero
2007-04-24 18:11   ` Andreas Schwab
2007-04-24 18:50     ` Juanma Barranquero
2007-04-24 21:38       ` Andreas Schwab
2007-04-24 21:54         ` Juanma Barranquero
2007-04-24 22:11           ` Andreas Schwab
2007-04-24 22:54             ` Juanma Barranquero
2007-04-24 21:57         ` David Kastrup
2007-04-24 22:07           ` Lennart Borgman (gmail)
2007-04-24 22:29             ` David Kastrup
2007-04-24 22:35               ` Andreas Schwab
2007-04-25  0:55                 ` Kenichi Handa
2007-04-25  9:51                   ` Andreas Schwab
2007-04-25  9:58                     ` David Kastrup
2007-04-25 10:50                       ` Andreas Schwab
2007-04-24 22:40               ` Lennart Borgman (gmail)
2007-04-24 22:12           ` Andreas Schwab
2007-04-24 22:31             ` David Kastrup
2007-04-24 22:56               ` Andreas Schwab
2007-04-24 21:39       ` Miles Bader
2007-04-24 21:45         ` Juanma Barranquero
2007-04-24 22:11           ` Miles Bader
2007-04-24 22:59             ` Juanma Barranquero
2007-04-24 23:37               ` Miles Bader
2007-04-24 23:44                 ` Johan Bockgård
2007-04-25  1:47                   ` Miles Bader
2007-04-25 14:52                   ` Richard Stallman
2007-04-26 15:03                     ` Daniel Brockman
2007-04-27 20:40                       ` Richard Stallman
2007-04-25  2:05       ` Richard Stallman
2007-04-25 12:00         ` Juanma Barranquero
2007-04-25  2:05   ` Richard Stallman
2007-04-24 17:48 ` Stefan Monnier
2007-04-25  2:05   ` Richard Stallman
2007-04-26 14:24   ` Dmitry Antipov
2007-04-25  2:05 ` Richard Stallman

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

  List information: https://www.gnu.org/software/emacs/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=buohcr56m0q.fsf@dhapc248.dev.necel.com \
    --to=miles.bader@necel.com \
    --cc=emacs-devel@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 public inbox

	https://git.savannah.gnu.org/cgit/emacs.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).