From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Michael Heerdegen Newsgroups: gmane.emacs.bugs Subject: bug#50927: [External] : bug#50927: Considering only entries with unique keys in map.el? Date: Fri, 01 Oct 2021 04:17:12 +0200 Message-ID: <87ee958p5j.fsf@web.de> References: <9fda32d4-5c09-a047-18aa-a792211ffa06@protonmail.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="19883"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: Okamsn , "50927@debbugs.gnu.org" <50927@debbugs.gnu.org> To: Drew Adams Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Oct 01 04:18:11 2021 Return-path: Envelope-to: geb-bug-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 1mW87n-00051O-M2 for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 01 Oct 2021 04:18:11 +0200 Original-Received: from localhost ([::1]:49908 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mW87l-0003xp-RC for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 30 Sep 2021 22:18:09 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:51738) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mW87e-0003xe-9a for bug-gnu-emacs@gnu.org; Thu, 30 Sep 2021 22:18:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:42826) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mW87e-0004PT-1l for bug-gnu-emacs@gnu.org; Thu, 30 Sep 2021 22:18:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1mW87d-0005OP-O8 for bug-gnu-emacs@gnu.org; Thu, 30 Sep 2021 22:18:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Michael Heerdegen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 01 Oct 2021 02:18:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 50927 X-GNU-PR-Package: emacs Original-Received: via spool by 50927-submit@debbugs.gnu.org id=B50927.163305465020691 (code B ref 50927); Fri, 01 Oct 2021 02:18:01 +0000 Original-Received: (at 50927) by debbugs.gnu.org; 1 Oct 2021 02:17:30 +0000 Original-Received: from localhost ([127.0.0.1]:54372 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mW878-0005Nf-3z for submit@debbugs.gnu.org; Thu, 30 Sep 2021 22:17:30 -0400 Original-Received: from mout.web.de ([212.227.17.12]:35061) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mW872-0005NN-7d for 50927@debbugs.gnu.org; Thu, 30 Sep 2021 22:17:28 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1633054633; bh=J/Yggyh4xo6NAaLwPmTVvGDKFL2W5rrVU8ClV5wQoBU=; h=X-UI-Sender-Class:From:To:Cc:Subject:References:Date:In-Reply-To; b=rL+T8wYt4k1UwkKFJu1QMqN6j1YDslc78NfHSrgXUG95iAo28Ky3nA+RQDH72AZWO tzBEc3zjWBkrejvpSuOojR1XbfSXErK0ZVdrJFf5h91K2NqSvBsvSueaCyxD+VlKXc beg/+Zqtr4geuaZTdAxoezDWHjIVtXBB/YfIZiok= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Original-Received: from drachen.dragon ([92.208.225.87]) by smtp.web.de (mrweb101 [213.165.67.124]) with ESMTPSA (Nemesis) id 0Lu52Q-1muuDf2jgM-011RqF; Fri, 01 Oct 2021 04:17:13 +0200 In-Reply-To: (Drew Adams's message of "Fri, 1 Oct 2021 01:56:10 +0000") X-Provags-ID: V03:K1:LOsV55WcjproBtQry1TFKYRp8jX9f342EiproRI/5W8ch5ES1j7 U65LUht6lt6ba7becR8WdcsDe3pu4Umd8UWWy7dl3sJMILkxNSH3aHU9EHPj4tPZapro2hN 5P/5muvAvClRF1GBJm+o5Ocj7ngqGWSQdT2oUjGUtZ3LrOuwzb4gPUCW9lliFk7mhtZYEkB AiYHIX7PuyLGBrjFLHgbQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:nDupT1w3JaA=:vPBZWGTsKanilhf1T0COS6 D2tcyM0PlESCvUhzn2l3/me2QMVpnY3ofmtsAh66qhGRaTY1z+1SFzXTwWHfHPzXKSBgfZx0A NDt+RnA+uFHeIjMMnnrhFOxdUWK0uzrkujOD9ZfZW7yzEjPiP6D1EYY7PtaWaJnPFagYg4/Pr tVA0qRJAVR0JRHi6SA2fQyPlAIFori9WzPK/BfHOAuys4jWM2j3qxCY5J6yKaUqwTkLP3uxOQ KvOG6tDd1Q9ZutvDzrCKajgn7xb1Jc+G+t4LMq3kU/Jm2D+aAhFYsTFP5ptZ9X/8JDzDDqTfY hwDKLzDdxw6stqLvdlELa/z0tYgIrCKDoreuW5ebYXAUUmQB4AGEge02y99pUQMlm7bVMC+EW hH50Ab7R1D+F50TYZlMTEVJKpmmPwnu5n+G8N6cepAOYK/V8y5Abgu2No/An10DevDTtxDtJG onMKxsNXlBfAoaGYs54bdwLR4c4heG4mG/ce9M4usnOsCGaMN1dXxO9DjY3lQV9RCUuzt6bS3 ZuG+QKHLihAzVCkeTcZUq/YQQpGKNYyUP1+iHa4fRdE9+G6K/ScJhy9IVf2qWPOxkp+FJll7u 34EFrwng86bw5bzg4REyDi6ssO7au0u3nkLKWQfylwf9LrLG2vNT5WgUhqz/i8JBFdvGNn8ny 7Z6OilHZOXoFdx+FzRSO63GiSQMxl5taagkM6lA9y7MbXXsEJ/igFhV4Qjs4SvMVJOaYvSjke wwjfGlb2lti/URpKSFPU317OAP2PzWcvQfnDNysqtzON6qxSekNAeQlX+N0dvVfSb0rJEABY X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:216001 Archived-At: Drew Adams writes: > > entry with the same key. This is a misleading behavior. > > Actually, it's a handy behavior. It's one of the main ideas behind > alists. You can just remove or skip the first match of a given key to > restore or use the next one. I tend to agree. And it's easy to avoid duplicate entries - they are not introduced when using the map.el functions the right way. OTOH: the map looping or do- tools also useful for inspecting duplicates - this is useful. Avoiding duplicates would also mean O(n^2) equality tests per map - right? Michael.