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From: Emanuel Berg <embe8573@student.uu.se>
To: help-gnu-emacs@gnu.org
Subject: Re: Are two symbols `equal' iff they are `eq'?
Date: Sun, 09 Aug 2015 03:52:10 +0200	[thread overview]
Message-ID: <87d1yxb54l.fsf@nl106-137-147.student.uu.se> (raw)
In-Reply-To: 87wpx5ia6y.fsf@mbork.pl

Marcin Borkowski <mbork@mbork.pl> writes:

> As in the subject; neither the manual nor the
> docstring for `equal' are very clear on this. (The
> docstring for `equal' says: "Symbols must match
> exactly.", which -- I would guess -- means `eq', but
> I'm not sure.)

If x and y are `equal' iff they are `eq', wouldn't
that make those functions equivalent?

Once again, the born man of action will find out like
this:

    (setq *l1* '(1 2 3))
    (setq *l2* '(1 2 3))

    (eq    *l1* *l2*) ; nil
    (eq    *l1* *l1*) ; t

    (equal *l1* *l2*) ; t

So `eq' is structure, and `equal' is data.

-- 
underground experts united
http://user.it.uu.se/~embe8573




  reply	other threads:[~2015-08-09  1:52 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-09  0:20 Are two symbols `equal' iff they are `eq'? Marcin Borkowski
2015-08-09  1:52 ` Emanuel Berg [this message]
2015-08-09  7:44   ` Marcin Borkowski
2015-08-09 15:28 ` Drew Adams
2015-08-09 15:46   ` Marcin Borkowski
2015-08-09 16:38     ` Drew Adams
     [not found]   ` <mailman.8032.1439135226.904.help-gnu-emacs@gnu.org>
2015-08-09 15:59     ` Stefan Monnier
     [not found] <mailman.7993.1439079676.904.help-gnu-emacs@gnu.org>
2015-08-09  0:31 ` Joost Kremers
2015-08-09  5:16   ` Ian Zimmerman
2015-08-09  7:30     ` Marcin Borkowski
2015-08-09 14:05       ` Michael Heerdegen
2015-08-09 15:10         ` Marcin Borkowski
2015-08-09 15:19           ` Eli Zaretskii
2015-08-09 15:45             ` Marcin Borkowski
2015-08-09 18:19               ` Eli Zaretskii
2015-08-09 19:41                 ` Marcin Borkowski
2015-08-10 15:26               ` Nicolas Richard
     [not found]   ` <mailman.8007.1439097407.904.help-gnu-emacs@gnu.org>
2015-08-09  5:21     ` Rusi
2015-08-09  5:33       ` Ian Zimmerman
2015-08-09  7:42   ` Marcin Borkowski
2015-08-09 14:03     ` Michael Heerdegen
2015-08-09 14:42       ` Marcin Borkowski
2015-08-09 14:47         ` Michael Heerdegen
     [not found]   ` <mailman.8011.1439106166.904.help-gnu-emacs@gnu.org>
2015-08-09 15:38     ` Joost Kremers

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