From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Thibaut Verron <thibaut.verron@gmail.com>
Cc: emacs-devel <emacs-devel@gnu.org>
Subject: Re: string> missing?
Date: Thu, 04 Jun 2015 11:33:44 -0400 [thread overview]
Message-ID: <jwvr3pr8p7s.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <CAFsi02T4N9uaE53XORn+bjOxNW12hZ2_5GDHXY55QXm05ARUEA@mail.gmail.com> (Thibaut Verron's message of "Thu, 4 Jun 2015 07:30:08 +0200")
> (setq str1 "foo")
> (setq str2 "foo")
> (setq str3 str1)
> (= str1 str2) ;;==> *error*
> (eq str1 str2) ;;==> nil
> (eq str1 "foo") ;;==> nil
> (eq str1 str3) ;;==> nil
> (string= str1 str2) ;;==> t
The "standard" equality testing in Elisp is `equal'.
E.g. it's what is used by `add-to-list', `member', and `assoc'.
IOW, usually you're expected to use `equal' unless you need something else.
Stefan
next prev parent reply other threads:[~2015-06-04 15:33 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-03 9:05 string> missing? Nicolas Petton
2015-06-03 14:51 ` Eli Zaretskii
2015-06-03 15:03 ` Nicolas Petton
2015-06-03 15:26 ` Tassilo Horn
2015-06-03 15:46 ` Nick Andryshak
2015-06-03 15:55 ` Eli Zaretskii
2015-06-03 16:10 ` Nick Andryshak
2015-06-03 16:42 ` Eli Zaretskii
2015-06-03 16:50 ` Nick Andryshak
2015-06-03 18:10 ` Andreas Schwab
2015-06-03 19:13 ` Alan Mackenzie
2015-06-03 19:13 ` Eli Zaretskii
2015-06-03 19:34 ` Nick Andryshak
2015-06-03 19:53 ` Eli Zaretskii
2015-06-03 20:11 ` Nick Andryshak
2015-06-03 20:37 ` Jay Belanger
2015-06-03 20:53 ` Nick Andryshak
2015-06-03 21:35 ` Jay Belanger
2015-06-03 21:36 ` Thibaut Verron
2015-06-03 22:25 ` Stefan Monnier
2015-06-04 5:30 ` Thibaut Verron
2015-06-04 7:44 ` Nicolas Richard
2015-06-04 8:08 ` Thibaut Verron
2015-06-04 15:33 ` Stefan Monnier [this message]
2015-06-03 22:28 ` Stefan Monnier
2015-06-04 2:50 ` Eli Zaretskii
2015-06-04 6:43 ` Tassilo Horn
2015-06-04 7:02 ` Bozhidar Batsov
2015-06-04 7:53 ` Gnus & Mail-Followup-To (was: string> missing?) Nicolas Richard
2015-06-04 9:04 ` Gnus & Mail-Followup-To Tassilo Horn
2015-06-04 12:50 ` Nicolas Richard
2015-06-05 17:07 ` Tassilo Horn
2015-06-06 8:48 ` Nicolas Richard
2015-06-04 4:20 ` string> missing? Thierry Volpiatto
2015-06-04 15:52 ` Nicolas Petton
2015-06-03 21:24 ` Richard Stallman
2015-06-04 15:07 ` Eli Zaretskii
2015-06-05 17:56 ` Richard Stallman
2015-06-05 19:04 ` Eli Zaretskii
2015-06-05 20:40 ` Tassilo Horn
2015-06-05 21:35 ` Ivan Shmakov
2015-06-05 21:53 ` Tassilo Horn
2015-06-05 22:04 ` Tassilo Horn
2015-06-06 6:40 ` Eli Zaretskii
2015-06-06 8:53 ` Tassilo Horn
2015-06-07 0:28 ` Richard Stallman
2015-06-06 1:52 ` Richard Stallman
2015-06-06 7:57 ` Eli Zaretskii
2015-06-07 0:28 ` Richard Stallman
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