From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS4713 221.184.0.0/13 X-Spam-Status: No, score=-3.9 required=3.0 tests=AWL,BAYES_00, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from neon.ruby-lang.org (neon.ruby-lang.org [221.186.184.75]) by dcvr.yhbt.net (Postfix) with ESMTP id A0D0B1F453 for ; Sun, 28 Apr 2019 12:17:46 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id 2E321120A04; Sun, 28 Apr 2019 21:17:42 +0900 (JST) Received: from o1678916x28.outbound-mail.sendgrid.net (o1678916x28.outbound-mail.sendgrid.net [167.89.16.28]) by neon.ruby-lang.org (Postfix) with ESMTPS id CB97B1209FF for ; Sun, 28 Apr 2019 21:17:39 +0900 (JST) Received: by filter0059p3mdw1.sendgrid.net with SMTP id filter0059p3mdw1-10230-5CC599E3-E 2019-04-28 12:17:39.421892522 +0000 UTC m=+228598.135552323 Received: from herokuapp.com (unknown [54.91.45.152]) by ismtpd0036p1iad1.sendgrid.net (SG) with ESMTP id lWvv8tZETBan5wrXKpz7IA for ; Sun, 28 Apr 2019 12:17:39.393 +0000 (UTC) Date: Sun, 28 Apr 2019 12:17:39 +0000 (UTC) From: mame@ruby-lang.org Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 67943 X-Redmine-Project: ruby-trunk X-Redmine-Issue-Id: 15745 X-Redmine-Issue-Author: koic X-Redmine-Sender: mame X-Mailer: Redmine X-Redmine-Host: bugs.ruby-lang.org X-Redmine-Site: Ruby Issue Tracking System X-Auto-Response-Suppress: All Auto-Submitted: auto-generated X-SG-EID: =?us-ascii?Q?EJh2gqwnyqXtd++xo=2FinyA1V0bXouTB4FkWnzNiKb48avoiZK9l84FUpsij8gV?= =?us-ascii?Q?lVtlNxXmxsi6VxwJU6Sh6EuzlVR3G7jd0=2FwezOr?= =?us-ascii?Q?i78qOTcaACMpmeYdh0DDBFiHBdi1b71GBq3cLHA?= =?us-ascii?Q?teZ6yK7pE23lc88ZWYkoz1Tx=2F=2FVRB61uwijbnbE?= =?us-ascii?Q?ZsSjaLXBMZ2J8iPxzCSDsg8wcTPiQMja9qA=3D=3D?= To: ruby-core@ruby-lang.org X-ML-Name: ruby-core X-Mail-Count: 92460 Subject: [ruby-core:92460] [Ruby trunk Bug#15745] There is no symmetry in the beginless range and the endless range using `Range#inspect` X-BeenThere: ruby-core@ruby-lang.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: Ruby developers List-Id: Ruby developers List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ruby-core-bounces@ruby-lang.org Sender: "ruby-core" Issue #15745 has been updated by mame (Yusuke Endoh). Eregon (Benoit Daloze) wrote: > Yes, I think it's a possibility and is rather consistent. Agreed, it is the most consistent. IMHO, `p (1..) #=> 1..nil` is a bit verbose, though. I think that an endless range will be much more commonly used than a beginless one because an endless range has many use cases but a beginless range has only one use case (DSL-like usage). Thus, I liked to make an endless one more useful and implemented the current behavior. But I admit that the current behavior looks inconsistent. I have no strong opinion. I'll hear other committers' opinions at the next dev meeting. ---------------------------------------- Bug #15745: There is no symmetry in the beginless range and the endless range using `Range#inspect` https://bugs.ruby-lang.org/issues/15745#change-77809 * Author: koic (Koichi ITO) * Status: Open * Priority: Normal * Assignee: * Target version: * ruby -v: ruby 2.7.0dev (2019-04-03 trunk 67423) [x86_64-darwin17] * Backport: 2.4: UNKNOWN, 2.5: UNKNOWN, 2.6: UNKNOWN ---------------------------------------- The following commit introduces beginless range. https://github.com/ruby/ruby/commit/95f7992b89efd35de6b28ac095c4d3477019c583 ``` % ruby -v ruby 2.7.0dev (2019-04-03 trunk 67423) [x86_64-darwin17] ``` There is no symmetry with endless range when using `Range#inspect` method. ``` (1..).inspect # => "1.." (..5).inspect # => "nil..5" ``` How about unifying whether it represents `nil`? -- https://bugs.ruby-lang.org/