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=-3.9 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 7FA441F5AE for ; Mon, 27 Jul 2020 20:14:19 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id 01261120A42; Tue, 28 Jul 2020 05:13:43 +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 CC063120A3F for ; Tue, 28 Jul 2020 05:13:40 +0900 (JST) Received: by filterdrecv-p3iad2-5b55dcd864-5dqzw with SMTP id filterdrecv-p3iad2-5b55dcd864-5dqzw-19-5F1F358F-34 2020-07-27 20:14:07.365105146 +0000 UTC m=+2689480.239869968 Received: from herokuapp.com (unknown) by ismtpd0001p1iad1.sendgrid.net (SG) with ESMTP id sEWYdzwgQZml8qQe7KD30Q for ; Mon, 27 Jul 2020 20:14:07.216 +0000 (UTC) Date: Mon, 27 Jul 2020 20:14:07 +0000 (UTC) From: marcandre-ruby-core@marc-andre.ca Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 75157 X-Redmine-Project: ruby-master X-Redmine-Issue-Tracker: Bug X-Redmine-Issue-Id: 12671 X-Redmine-Issue-Author: headius X-Redmine-Sender: marcandre 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?6=2FIMxCQLDposcQf5wmbDAtfaKduBAO0bKyhL3BGZtMQ5q7K2TvpbN6A7JIyt9E?= =?us-ascii?Q?aOwr5kho5+NbsWj7xKtnhW8xMjy=2FIE4WmX4hweR?= =?us-ascii?Q?oR9+7pEQlk6tm1ElT2=2F0Dtp+hyqmx5uinA719XK?= =?us-ascii?Q?4KRd19fWbkGC0z3hVxl3pWrv+z9dA8jU0Vo+B=2Fg?= =?us-ascii?Q?=2F4YPxwHGA0YBi=2FICd0ck6j=2FrwgwpD5MRtG2x2wK?= =?us-ascii?Q?6snXLvN2C5ESwyEdrRgpYny4627x7aY2=2FO0Qj8?= To: ruby-core@ruby-lang.org X-ML-Name: ruby-core X-Mail-Count: 99361 Subject: [ruby-core:99361] [Ruby master Bug#12671] Hash#to_proc result is not a lambda, but enforces arity 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 #12671 has been updated by marcandre (Marc-Andre Lafortune). Status changed from Closed to Open Is there a reason why the arity was not fixed to `1` (instead of `-1`)? ---------------------------------------- Bug #12671: Hash#to_proc result is not a lambda, but enforces arity https://bugs.ruby-lang.org/issues/12671#change-86761 * Author: headius (Charles Nutter) * Status: Open * Priority: Normal * ruby -v: ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-darwin14] * Backport: 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN ---------------------------------------- ``` $ ruby23 -e 'pr = {foo:1}.to_proc; puts pr.lambda?; pr.call rescue puts $!; pr.call(1, 2) rescue puts $!' false wrong number of arguments (given 0, expected 1) wrong number of arguments (given 2, expected 1) ``` I believe it should be marked as a lambda, since it enforces arity. -- https://bugs.ruby-lang.org/