From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.org!not-for-mail
From: "Pascal J. Bourguignon" <pjb@informatimago.com>
Newsgroups: gmane.emacs.help
Subject: Re: symbols and cells
Date: Thu, 15 May 2014 20:07:59 +0200
Organization: Informatimago
Message-ID: <87mweioqyo.fsf@kuiper.lan.informatimago.com>
References: <mailman.1410.1400173825.1147.help-gnu-emacs@gnu.org>
NNTP-Posting-Host: plane.gmane.org
Mime-Version: 1.0
Content-Type: text/plain
X-Trace: ger.gmane.org 1400177726 4583 80.91.229.3 (15 May 2014 18:15:26 GMT)
X-Complaints-To: usenet@ger.gmane.org
NNTP-Posting-Date: Thu, 15 May 2014 18:15:26 +0000 (UTC)
To: help-gnu-emacs@gnu.org
Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu May 15 20:15:21 2014
Return-path: <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>
Envelope-to: geh-help-gnu-emacs@m.gmane.org
Original-Received: from lists.gnu.org ([208.118.235.17])
	by plane.gmane.org with esmtp (Exim 4.69)
	(envelope-from <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>)
	id 1Wl0Bc-00056f-1J
	for geh-help-gnu-emacs@m.gmane.org; Thu, 15 May 2014 20:15:20 +0200
Original-Received: from localhost ([::1]:59854 helo=lists.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>)
	id 1Wl0Bb-0005Ve-HB
	for geh-help-gnu-emacs@m.gmane.org; Thu, 15 May 2014 14:15:19 -0400
Original-Path: usenet.stanford.edu!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
Original-Newsgroups: gnu.emacs.help
Original-Lines: 33
Original-X-Trace: individual.net Q7cM1s39k/5aTMK8vYW9BwRp3XTCB9lTiaEsISWz9Bw7XyDRhF
Cancel-Lock: sha1:MTM5ZTdlZmVhYTA3NTk4MjRjNDUwZDcxODE5Mjk4OTJjZDQ1NzMxMQ==
	sha1:5Ye/2j/bmpTV3KZSUYvLwl2vY9E=
Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwAQMAAABtzGvEAAAABlBMVEUAAAD///+l2Z/dAAAA
	oElEQVR4nK3OsRHCMAwF0O8YQufUNIQRGIAja9CxSA55AxZgFO4coMgYrEDDQZWPIlNAjwq9
	033pbOBPtbXuB6PKNBn5gZkhGa86Z4x2wE67O+06WxGD/HCOGR0deY3f9Ijwwt7rNGNf6Oac
	l/GuZTF1wFGKiYYHKSFAkjIo1b6sCYS1sVmFhhhahKQssRjRT90ITWUk6vvK3RsPGs+M1RuR
	mV+hO/VvFAAAAABJRU5ErkJggg==
X-Accept-Language: fr, es, en
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux)
Original-Xref: usenet.stanford.edu gnu.emacs.help:205413
X-BeenThere: help-gnu-emacs@gnu.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: Users list for the GNU Emacs text editor <help-gnu-emacs.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/help-gnu-emacs>
List-Post: <mailto:help-gnu-emacs@gnu.org>
List-Help: <mailto:help-gnu-emacs-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=subscribe>
Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org
Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org
Xref: news.gmane.org gmane.emacs.help:97681
Archived-At: <http://permalink.gmane.org/gmane.emacs.help/97681>

Christopher Howard <cmhoward2@alaska.edu> writes:

> I'm still working through the earlier parts of the Elisp
> documentation, but I am curious: How does one define the variable cell
> and function cell for an /uninterned/ symbol? The docs indicate you
> can do this:
>
> (defvar sym (make-symbol "foo"))
>
> But how do you add a function or variable value to foo without
> interning it?

(require 'cl)
(setf (symbol-value sym) 42
      (symbol-function sym) (lambda () 33))

(eval sym) --> 42
(eval (list sym)) --> 33


> On a related note, I'm curious about this perverse construction:
>
> (defvar sym1 (lambda (n) (+ 1 n)))
>
> Is it actually possible to call the the lambda somehow?

(funcall sym1 (symbol-value sym)) --> 43


-- 
__Pascal Bourguignon__
http://www.informatimago.com/
"Le mercure monte ?  C'est le moment d'acheter !"