From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: tomas@tuxteam.de Newsgroups: gmane.emacs.help Subject: Re: Calling a function with undefined symbol Date: Mon, 31 Oct 2022 10:07:09 +0100 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="NUbetaU5LFKylZ+m" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="1857"; mail-complaints-to="usenet@ciao.gmane.io" Cc: help-gnu-emacs@gnu.org To: Heime Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Mon Oct 31 10:08:10 2022 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1opQmA-0000I2-Fs for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 31 Oct 2022 10:08:10 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1opQle-0000SD-Vx; Mon, 31 Oct 2022 05:07:40 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1opQlW-0000Lp-0j for help-gnu-emacs@gnu.org; Mon, 31 Oct 2022 05:07:30 -0400 Original-Received: from mail.tuxteam.de ([5.199.139.25]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1opQlF-0006NT-B3 for help-gnu-emacs@gnu.org; Mon, 31 Oct 2022 05:07:29 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=tuxteam.de; s=mail; h=In-Reply-To:Content-Type:MIME-Version:References:Message-ID:Subject :Cc:To:From:Date:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=vKDy/8AIPIeDt7OCpfzRO7vcY+ifxo83VPPsND8WaX8=; b=EteJABs5DeOSvFZqBihiszlbJ8 GwH9N0zTNM3Qk2I6WtiQXyop4GCoKjxncs5RCtFgxb4IKs/F9yP51fikIpdkuHX2UtgngY+7K4nET FA9SjDuLb6Pi7ncV+nQSiyQ/UKTX/nRCrhgPVZLZON45YksgGaMWUUlVA4Wlx9hkdLY2/xvMdFxfM VEyHSS8xKWteVBnaggLsgnJlY9lowg9MNkP3Alc/dM1sNP+o9LYUzOzNVb4Y0d7oCaGKqQ56MH22K 2T7TAVNZgxwU0IjWqYpNhXGL7IFtn/XszqUqufqfcrfsQbK52Um3ho4p64FrsTnw5oekKZVyaiB4x YeU43dxg==; Original-Received: from tomas by mail.tuxteam.de with local (Exim 4.94.2) (envelope-from ) id 1opQlB-0001go-5q; Mon, 31 Oct 2022 10:07:09 +0100 Content-Disposition: inline In-Reply-To: Received-SPF: pass client-ip=5.199.139.25; envelope-from=tomas@tuxteam.de; helo=mail.tuxteam.de X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: "help-gnu-emacs" Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.help:140527 Archived-At: --NUbetaU5LFKylZ+m Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Oct 31, 2022 at 08:57:09AM +0000, Heime wrote: > ------- Original Message ------- > On Monday, October 31st, 2022 at 8:42 AM, wrote: [...] > Then, how is it that (symbol-value 'seqr) returns 5? There seems to be= =20 > a symbol and symbol-value returns 5. Please: read the docs yourself. Others can't do that for you. Specifically "12.7 Accessing Variable Values" in the Emacs Lisp manual. That a "symbol" has a "value" is just a shorthand notation for "a symbol" has "a value" associated to it via a variable. It can also have other things associated to it (a function, for example, also a property list). But it needn't, it can just exist on its own.=20 > Yes, I have got really confused about what symbols are exactly. Even > after reading several times. I have never seen anybody make a symbol, > only variables. So, what is a symbol? 'foo (spedifically this coaxes the reader into creating one. The function behind that is intern. See there. Cheers --=20 t --NUbetaU5LFKylZ+m Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EABECAB0WIQRp53liolZD6iXhAoIFyCz1etHaRgUCY1+QNwAKCRAFyCz1etHa RsRyAJ41uMNXkEOWeMxDBow86/hutoE8hQCfdOxWb70HWtZIeM/JDrsdGOdcgDA= =SEW1 -----END PGP SIGNATURE----- --NUbetaU5LFKylZ+m--