From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Original-To: poffice@blade.nagaokaut.ac.jp Delivered-To: poffice@blade.nagaokaut.ac.jp Received: from kankan.nagaokaut.ac.jp (kankan.nagaokaut.ac.jp [133.44.2.24]) by blade.nagaokaut.ac.jp (Postfix) with ESMTP id C5F221B0002E for ; Thu, 6 Oct 2016 08:50:37 +0900 (JST) Received: from voscc.nagaokaut.ac.jp (voscc.nagaokaut.ac.jp [133.44.1.100]) by kankan.nagaokaut.ac.jp (Postfix) with ESMTP id 29B45B5D880 for ; Thu, 6 Oct 2016 09:22:19 +0900 (JST) Received: from neon.ruby-lang.org (neon.ruby-lang.org [221.186.184.75]) by voscc.nagaokaut.ac.jp (Postfix) with ESMTP id 4B27A18CC819 for ; Thu, 6 Oct 2016 09:22:19 +0900 (JST) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id 963A21204FB; Thu, 6 Oct 2016 09:22:17 +0900 (JST) X-Original-To: ruby-core@ruby-lang.org Delivered-To: ruby-core@ruby-lang.org Received: from o2.heroku.sendgrid.net (o2.heroku.sendgrid.net [67.228.50.55]) by neon.ruby-lang.org (Postfix) with ESMTPS id 7D9F7120479 for ; Thu, 6 Oct 2016 09:22:14 +0900 (JST) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sendgrid.me; h=from:to:references:subject:mime-version:content-type:content-transfer-encoding:list-id; s=smtpapi; bh=AfU+GHP0tzxXgk1u4vemmJgBX48=; b=r77CIK4Xpxxgx5JsBp /tJWTKR4IfdgKToq85pRTD8QyWdOnRCcXdTwMvII21I2VGeVz27WiFzbPX/LKa37 0xFQylQpYwz58Mk4zvlMyPA83iJ/PE3CB2y9vPlUvvv0BIrywwyEYnMJwHG91A8u lI5ISwp0rh+nxLs4qzcjuCA3c= Received: by filter0974p1mdw1.sendgrid.net with SMTP id filter0974p1mdw1.25737.57F599312A 2016-10-06 00:22:09.422052227 +0000 UTC Received: from herokuapp.com (ec2-54-234-53-173.compute-1.amazonaws.com [54.234.53.173]) by ismtpd0003p1iad1.sendgrid.net (SG) with ESMTP id kQuSBa_LR3K_45X0mNdhYQ Thu, 06 Oct 2016 00:22:09.294 +0000 (UTC) Date: Thu, 06 Oct 2016 00:22:09 +0000 From: ryand-ruby@zenspider.com To: ruby-core@ruby-lang.org Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 52339 X-Redmine-Project: ruby-trunk X-Redmine-Issue-Id: 11286 X-Redmine-Issue-Author: 0x0dea X-Redmine-Issue-Assignee: matz X-Redmine-Sender: zenspider 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: ync6xU2WACa70kv/Ymy4QrNMhiuLXJG8OTL2vJD1yS5W0TlP6FBT/Qs71bGw042aI30HzYcGIJBX/E 5iO3Ax0O7iMpP1PBA6LmBfCJt+aySqyRlPILW/OOrKnWXm2gTYeDKOg/8AA11OexeCbIjZe8TxqIbp O6ssZgS6ffDzVdPtiwfiJFa/EfqhQ/reqmGSH0/oK0JnLrRCMNJaVn2GnA== X-ML-Name: ruby-core X-Mail-Count: 77492 Subject: [ruby-core:77492] [Ruby trunk Feature#11286] [PATCH] Add case equality arity to Enumerable's sequence predicates. 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 #11286 has been updated by Ryan Davis. Why is this still open a year later? Matz? A ruling? ---------------------------------------- Feature #11286: [PATCH] Add case equality arity to Enumerable's sequence predicates. https://bugs.ruby-lang.org/issues/11286#change-60758 * Author: D.E. Akers * Status: Open * Priority: Normal * Assignee: Yukihiro Matsumoto ---------------------------------------- ## Proposal It is proposed that `Enumerable`'s sequence predicates (`#all?`, `#any?`, `#none?`, and `#one?`) be augmented to return, in the case of a single argument, whether their query holds when each element is supplied to the argument's `#===` method. ## Rationale `Enumerable#grep` filters by case equality, allowing us to write very natural and expressive code: ```ruby strs.select { |str| /foo/ === str } strs.grep(/foo/) nums.select { |num| (5..10) === num } nums.grep(5..10) ``` In addition to taking advantage of the versatility of case equality, it lets us do away with the syntactic noise incurred by opening a block. `#grep` is a very nice method! Let's make `#all?` and friends more like `#grep`. ---Files-------------------------------- 0001-enum.c-add-case-equality-arity-to-sequence-predicates.patch (10 KB) case_equality_sequence_predicates-check_argc_before_deref.patch (10 KB) case_equality_sequence_predicates-all_updates.patch (9.94 KB) -- https://bugs.ruby-lang.org/