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-Status: No, score=-4.0 required=3.0 tests=AWL,BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY 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 392E11F990 for ; Wed, 5 Aug 2020 20:25:20 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id D633E120B31; Thu, 6 Aug 2020 05:24:48 +0900 (JST) Received: from xtrwkhkc.outbound-mail.sendgrid.net (xtrwkhkc.outbound-mail.sendgrid.net [167.89.16.28]) by neon.ruby-lang.org (Postfix) with ESMTPS id A9C0E120B2F for ; Thu, 6 Aug 2020 05:24:45 +0900 (JST) Received: by filterdrecv-p3iad2-d8cc6d457-kmh22 with SMTP id filterdrecv-p3iad2-d8cc6d457-kmh22-18-5F2B15A9-70 2020-08-05 20:25:13.60834741 +0000 UTC m=+613015.058765656 Received: from herokuapp.com (unknown) by geopod-ismtpd-1-0 (SG) with ESMTP id t1OiN4XQQSadvFvXSwjjpw for ; Wed, 05 Aug 2020 20:25:13.554 +0000 (UTC) Date: Wed, 05 Aug 2020 20:25:13 +0000 (UTC) From: merch-redmine@jeremyevans.net Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 75313 X-Redmine-Project: ruby-master X-Redmine-Issue-Tracker: Misc X-Redmine-Issue-Id: 17104 X-Redmine-Issue-Author: bughit X-Redmine-Sender: jeremyevans0 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?RVE3t853K5scBhbmJHUzZTFFeVC=2FZSUmHZ0Dc+26wcEi2CTgsF1oz0wTSSxGGN?= =?us-ascii?Q?BIlHqrfdPatRmXWHJMPyteOa8FVuepQpy4X4MIO?= =?us-ascii?Q?On3EydXTEkn6xxIqSGWf0jFYZ5e7T6IaTGfwc34?= =?us-ascii?Q?1BGxTPEqUivSyDBqn0Qca04=2FAxY6IKPyl0YYcLR?= =?us-ascii?Q?HwQTBmAkrya+Tw3DJ4Pu1IqSpbKZFi5jPN+PqVF?= =?us-ascii?Q?F60cBemc5PTV66Wds=3D?= To: ruby-core@ruby-lang.org X-ML-Name: ruby-core X-Mail-Count: 99487 Subject: [ruby-core:99487] [Ruby master Misc#17104] Why are interpolated string literals frozen? 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 #17104 has been updated by jeremyevans0 (Jeremy Evans). Status changed from Open to Closed Other people have felt the same way, including me (see https://bugs.ruby-lang.org/issues/11473#note-7 and https://bugs.ruby-lang.org/issues/8976#note-67). However, @matz decided during the November 2015 developer meeting that they should be frozen for simplicity, see https://docs.google.com/document/d/1D0Eo5N7NE_unIySOKG9lVj_eyXf66BQPM4PKp7NvMyQ/pub ---------------------------------------- Misc #17104: Why are interpolated string literals frozen? https://bugs.ruby-lang.org/issues/17104#change-86943 * Author: bughit (bug hit) * Status: Closed * Priority: Normal ---------------------------------------- ```rb #frozen_string_literal: true def foo(str) "#{str}" end fr1 = 'a' fr2 = 'a' fr1_1 = foo(fr1) fr2_1 = foo(fr2) puts fr1.__id__, fr2.__id__, fr1_1.__id__, fr2_1.__id__ puts fr1_1 << 'b' ``` Isn't the point of frozen literals to avoid needless allocations? But interpolated strings are allocated each time, so freezing appears pointless. -- https://bugs.ruby-lang.org/