From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Newsgroups: gmane.emacs.help Subject: Re: Check whether an object is an alist Date: Tue, 17 Sep 2024 11:46:01 +0200 Message-ID: References: <87wmjamxg9.fsf@ledu-giraud.fr> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="OZWOa/ry33hPSoM4" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="16452"; mail-complaints-to="usenet@ciao.gmane.io" To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Tue Sep 17 11:46:49 2024 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 1sqUnI-00046T-NP for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 17 Sep 2024 11:46:48 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sqUmi-0004dg-N5; Tue, 17 Sep 2024 05:46:12 -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 1sqUmg-0004dJ-Lp for help-gnu-emacs@gnu.org; Tue, 17 Sep 2024 05:46:10 -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 1sqUme-0007hB-9E for help-gnu-emacs@gnu.org; Tue, 17 Sep 2024 05:46:10 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=tuxteam.de; s=mail; h=From:In-Reply-To:Content-Type:MIME-Version:References:Message-ID: Subject:To:Date:Sender:Reply-To:Cc: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=A2kcI30SKhNPJ/Bp9QlG0mOwi6ShtYqAZOv+zHS3SB8=; b=LlH8D6fHXY7Mfcj8avgwQA7q01 8+gHpEG3fBJbVf6otwT2iNb9ySfcdvV6R66bOuARAjckzwbe9VFEy0OYDyNM/0ai4RAKtNQKGUGsu slG+Xe3Yi/hafC3Via5cgsjM84mwdDSYHxar1ZETxucVNCkJjFueSWBe7/hrC/PebjkqGNob/Qy1E 63TFbYT+An6qUf/Et5w5Tui8tnPxxK45T0E/qFCX1z/gngvA3yBwjDlvZrXyPXVCXdwTj025hhQLQ W3/HC4gXFaqtfzTPISu3c9KXelWl7BtXhZ2HBr5WEiK+CXLNtY3xREDDv+s4WmyKxLBQylFSJqn0B TfhZ7tFg==; Original-Received: from tomas by mail.tuxteam.de with local (Exim 4.94.2) (envelope-from ) id 1sqUmX-0004Jy-Il for help-gnu-emacs@gnu.org; Tue, 17 Sep 2024 11:46:01 +0200 Content-Disposition: inline In-Reply-To: <87wmjamxg9.fsf@ledu-giraud.fr> 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: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.help:148000 Archived-At: --OZWOa/ry33hPSoM4 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Sep 17, 2024 at 11:38:46AM +0200, Manuel Giraud via Users list for = the GNU Emacs text editor wrote: > Heime writes: >=20 > > Sent with Proton Mail secure email. > > > > On Monday, September 16th, 2024 at 10:29 PM, Heime wrote: > > > >> Is there a function that checks whether an object is an alist. > >> Have only found listp. > > > > Because I may have to come up with a solution, I have made this one. > > Am I missing anything ? > > > > (defun torium-alist-p (obj) > > "Return t if object OBJ is an association list (alist)." > > (and (listp obj) > > (not (null obj)) > > (every (lambda (x) > > (and (consp x) > > (not (null x)))) > > obj))) >=20 > Looks good to me. I think it should `cl-every' instead of `every' and > also, maybe, nil is a valid empty alist. Unless you'd like to have nil as a possible key (alists allow that, why not?): (setq al '((nil . "I am not") (t . "I am"))) (alist-get nil al) =3D> "I am not" Cheers --=20 t --OZWOa/ry33hPSoM4 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EABECAB0WIQRp53liolZD6iXhAoIFyCz1etHaRgUCZulP0wAKCRAFyCz1etHa Rp18AJ0UKOCkNaPSeZPRyVwzBVk2yA5S5QCeJ/bY62WlgHN4vZIeNTXZEN/KOeo= =Dvb5 -----END PGP SIGNATURE----- --OZWOa/ry33hPSoM4--