From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS4713 221.184.0.0/13 X-Spam-Status: No, score=-2.9 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_MED,SPF_PASS,T_RP_MATCHES_RCVD shortcircuit=no autolearn=ham autolearn_force=no version=3.4.0 Received: from neon.ruby-lang.org (neon.ruby-lang.org [221.186.184.75]) by dcvr.yhbt.net (Postfix) with ESMTP id BF2881F404 for ; Wed, 24 Jan 2018 14:48:53 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id C4681120ABC; Wed, 24 Jan 2018 23:48:52 +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 0D965120AB9 for ; Wed, 24 Jan 2018 23:48:50 +0900 (JST) Received: by filter0016p3iad2.sendgrid.net with SMTP id filter0016p3iad2-6625-5A689CD0-53 2018-01-24 14:48:48.68651178 +0000 UTC Received: from herokuapp.com (ec2-50-19-14-97.compute-1.amazonaws.com [50.19.14.97]) by ismtpd0009p1iad2.sendgrid.net (SG) with ESMTP id O7OAb-MhRAa8eBZDJiDrAw Wed, 24 Jan 2018 14:48:48.563 +0000 (UTC) Date: Wed, 24 Jan 2018 14:48:48 +0000 (UTC) From: danieldasilvaferreira@gmail.com To: ruby-core@ruby-lang.org Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 60294 X-Redmine-Project: common-ruby X-Redmine-Issue-Id: 13581 X-Redmine-Issue-Author: americodls X-Redmine-Sender: dsferreira 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/Ymy4QrNMhiuLXJG8OTL2vJD1yS6D16VZ2J3KDgFFxXegFLeKa8SGkyKjr/Cad6 NzDHbNTB3DfXIm/zPiJZxiWLmcKmPenfhHG192vDAraFSq1Ag0BPp27LyRVlVP0JZWHG/tvPJ0/3e8 bbEmBD1do+EO49cyGzlP4d7rMaA5B4dF1VUbQv870TioEydupCmIjJyKaw== X-ML-Name: ruby-core X-Mail-Count: 85053 Subject: [ruby-core:85053] [CommonRuby Feature#13581] Syntax sugar for method reference 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 #13581 has been updated by dsferreira (Daniel Ferreira). zverok (Victor Shepelev) wrote: > map(&Math|>sqrt), each(&|>puts) (too confusable with Elixir-like pipe, probably) I tend to agree with that. In fact I was hoping to get the pipe operator introduced in ruby. (Created an issue with that in mind: https://bugs.ruby-lang.org/issues/14392). Taking that pipe operator example as an operator that sends messages maybe we can use it to send a message to the class or module. Like this: ``` ruby :sqrt |> Math ``` Since `Math` is not a method the message would extract the method from the object. If this is not practical maybe we could invert the operator and do: ```ruby Math <| :sqrt ``` ---------------------------------------- Feature #13581: Syntax sugar for method reference https://bugs.ruby-lang.org/issues/13581#change-69771 * Author: americodls (Americo Duarte) * Status: Open * Priority: Normal * Assignee: * Target version: ---------------------------------------- Some another programming languages (even Java, in version 8) has a cool way to refer a method as a reference. I wrote some examples here: https://gist.github.com/americodls/20981b2864d166eee8d231904303f24b I miss this thing in ruby. I would thinking if is possible some like this: ~~~ roots = [1, 4, 9].map &Math.method(:sqrt) ~~~ Could be like this: ~~~ roots = [1, 4, 9].map Math->method ~~~ What do you guys thinking about it? -- https://bugs.ruby-lang.org/