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=-2.7 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, FORGED_GMAIL_RCVD,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS shortcircuit=no autolearn=no 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 00CBC1F454 for ; Mon, 11 Nov 2019 15:26:27 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id 734D9120A56; Tue, 12 Nov 2019 00:26:16 +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 00C68120A55 for ; Tue, 12 Nov 2019 00:26:13 +0900 (JST) Received: by filter0128p3las1.sendgrid.net with SMTP id filter0128p3las1-30839-5DC97D9A-5C 2019-11-11 15:26:18.405196477 +0000 UTC m=+323398.401737130 Received: from herokuapp.com (unknown [35.171.185.2]) by ismtpd0052p1iad1.sendgrid.net (SG) with ESMTP id old7c6tcRqaG5nNOacO95Q for ; Mon, 11 Nov 2019 15:26:18.401 +0000 (UTC) Date: Mon, 11 Nov 2019 15:26:18 +0000 (UTC) From: zverok.offline@gmail.com Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 71418 X-Redmine-Project: ruby-trunk X-Redmine-Issue-Id: 16341 X-Redmine-Issue-Author: Nondv X-Redmine-Sender: zverok 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?3be0g8093pjUjT94eiCA64csFDBI=2FmHQTWm54P5gda44PX+oOoZHZz5IVSUML5?= =?us-ascii?Q?C6CKaYVRPa7=2FfkVDvqK4JP9GJzIeuo5RlRK5i13?= =?us-ascii?Q?bhfKlGy265DC1cg4Fpdri1c4gMYocZf7y7sMvfS?= =?us-ascii?Q?upd1IGoB+HwXw=2F12tKmmvgaNabx0gq0LzLO1oaM?= =?us-ascii?Q?LBhh=2Fm2PhRSMhgDWIxaQStzEUtJLg57BgGg=3D=3D?= To: ruby-core@ruby-lang.org X-ML-Name: ruby-core X-Mail-Count: 95793 Subject: [ruby-core:95793] [Ruby master Feature#16341] Proposal: Set#to_proc 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 #16341 has been updated by zverok (Victor Shepelev). Fair enough. ...well, you still can ```ruby pets.count(&dogs.:include?) ``` until the core team haven't reverted it :)))) (Which, for me, is more clear than value-objects-suddenly-becoming-procs, but apparently it is only me) ---------------------------------------- Feature #16341: Proposal: Set#to_proc https://bugs.ruby-lang.org/issues/16341#change-82614 * Author: Nondv (Dmitry Non) * Status: Open * Priority: Normal * Assignee: * Target version: ---------------------------------------- ``` ruby class Set def to_proc -> (x) { include?(x) } # or method(:include?).to_proc end end ``` Usage: ```ruby require 'set' banned_numbers = Set[0, 5, 7, 9] (1..10).reject(&banned_numbers) # ===> [1, 2, 3, 4, 6, 8, 10] ``` -- https://bugs.ruby-lang.org/