From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Emanuel Berg via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: append, push, and add-to-list. Date: Mon, 05 Jul 2021 22:35:23 +0200 Message-ID: <87lf6kcxdg.fsf@zoho.eu> References: <87o8bgg6br.fsf@zoho.eu> <20210705154121.GB6395@tuxteam.de> <871r8cg0je.fsf@zoho.eu> <878s2keikw.fsf@zoho.eu> Reply-To: Emanuel Berg Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="21312"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:7hKo1afiFW5xE4Qa5nYVCkkegNc= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Mon Jul 05 22:36:00 2021 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 1m0VJv-0005JW-8m for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 05 Jul 2021 22:35:59 +0200 Original-Received: from localhost ([::1]:54996 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m0VJt-0007r2-QX for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 05 Jul 2021 16:35:57 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:41038) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m0VJa-0007qu-Uu for help-gnu-emacs@gnu.org; Mon, 05 Jul 2021 16:35:38 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:44308) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m0VJX-0001ET-0i for help-gnu-emacs@gnu.org; Mon, 05 Jul 2021 16:35:38 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1m0VJV-0004h2-3z for help-gnu-emacs@gnu.org; Mon, 05 Jul 2021 22:35:33 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Mail-Copies-To: never Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 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" Xref: news.gmane.io gmane.emacs.help:131500 Archived-At: Stefan Monnier via Users list for the GNU Emacs text editor wrote: > A bit too obvious, methinks. Maybe: > > (seq-intersection (seq-filter #'cl-oddp > (seq-map-indexed > (lambda (_ i) i) > (make-list (random 42) nil))) > (seq-filter #'cl-evenp > (seq-map-indexed > (lambda (_ i) i) > (make-list (random 42) nil)))) (nth integer-width (string-to-list "Only this message denotes the empty list")) -- underground experts united https://dataswamp.org/~incal