From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Jean Louis Newsgroups: gmane.emacs.help Subject: Re: Passing a list to an interactive function Date: Sat, 19 Dec 2020 06:49:09 +0300 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="36755"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mutt/2.0 (3d08634) (2020-11-07) Cc: Help Gnu Emacs To: pietru@caramail.com Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sat Dec 19 04:51:43 2020 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 1kqTHR-0009Q4-UX for geh-help-gnu-emacs@m.gmane-mx.org; Sat, 19 Dec 2020 04:51:41 +0100 Original-Received: from localhost ([::1]:48854 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kqTHQ-0005u3-Uy for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 18 Dec 2020 22:51:40 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:56730) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kqTGp-0005tr-Pk for help-gnu-emacs@gnu.org; Fri, 18 Dec 2020 22:51:03 -0500 Original-Received: from stw1.rcdrun.com ([217.170.207.13]:50483) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kqTGn-0003Cx-DI for help-gnu-emacs@gnu.org; Fri, 18 Dec 2020 22:51:03 -0500 Original-Received: from localhost ([::ffff:41.202.241.37]) (AUTH: PLAIN securesender, TLS: TLS1.2,256bits,ECDHE_RSA_AES_256_GCM_SHA384) by stw1.rcdrun.com with ESMTPSA id 000000000001E53A.000000005FDD78A2.00005FAF; Fri, 18 Dec 2020 20:50:57 -0700 Content-Disposition: inline In-Reply-To: Received-SPF: pass client-ip=217.170.207.13; envelope-from=bugs@gnu.support; helo=stw1.rcdrun.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_PASS=-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: 2.1.23 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:126554 Archived-At: * pietru@caramail.com [2020-12-19 06:34]: > I decided towards a simpler strategy by passing a string with numbers > separated by spaces. But inside the function, I got to convert from > string to a list containing numbers. > > How could I convert to a list containing numbers. > > Example of string: "3 5 13" Function `read-number' ensured you get the number. If function is for you it is fine, if it is for others you risk not getting a number. If data goes to database which also accepts string you risk losing data as you maybe did not get a number. If user writes spaces before numbers or after numbers or multiple spaces between you need to remove such. (setq my-worse-string " 1 2 3 4 5 6 ") (setq my-string (split-string my-worse-string) ;; it will convert to numbers my-string becomes => ("1" "2" "3" "4" "5" "6") Inspect `split-string' as it can omit nulls and trim strings automatically. But I did not here include those switches, as it does so by default. Then you need to convert list of strings to list of numbers: (mapcar #'string-to-number my-string)