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 679A019C0024 for ; Tue, 27 Oct 2015 21:17:57 +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 AF407B5D89C for ; Tue, 27 Oct 2015 21:45:44 +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 BE359952408 for ; Tue, 27 Oct 2015 21:45:44 +0900 (JST) Received: from [221.186.184.76] (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id B857A120493; Tue, 27 Oct 2015 21:45:44 +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 937C5120482 for ; Tue, 27 Oct 2015 21:45:40 +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=JOH8wXpLBYPy1Rg8/aZKs1JgZ3Y=; b=NpmTVW/1XC2QZP/s1o eiUx58EebqHcf9OyEi0PBgubSC7yemwsV1Yahcwp+wmAJyJ2lyb+5yQ269y3nTq1 VKvtpxJWFQgp4jaATP7ffSRMCoKoVgDtZsUkyog1tmq2uSRPMjqfxHyANpHiWiHD GcL+YMvDCSlkaVfWZ4DeI0SeA= Received: by filter0654p1mdw1.sendgrid.net with SMTP id filter0654p1mdw1.19471.562F71EF2B 2015-10-27 12:45:35.971890017 +0000 UTC Received: from herokuapp.com (ec2-54-146-63-237.compute-1.amazonaws.com [54.146.63.237]) by ismtpd0004p1iad1.sendgrid.net (SG) with ESMTP id aV3zIYjjRqa3OjG5gpGXVw for ; Tue, 27 Oct 2015 12:45:36.127 +0000 (UTC) Date: Tue, 27 Oct 2015 12:45:36 +0000 From: mame@ruby-lang.org To: ruby-core@ruby-lang.org Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Redmine-MailingListIntegration-Message-Ids: 45848 X-Redmine-Project: ruby-trunk X-Redmine-Issue-Id: 11537 X-Redmine-Issue-Author: hsbt X-Redmine-Issue-Assignee: matz X-Redmine-Sender: mame 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/Ymy4QrNMhiuLXJG8OTL2vJD1yS75UDqC+n5fAZC/65hLEgX2xhHaPQJhgjQ7YB HMj1tdnX5nSvH03aTnKl8DKbt9+f9JOuyB3WJQGUmEs14uaHzuurI4EKqO1FOdAUs0lSKaacJvXytF WQz3NULP3SCcR6Yi1PHHU+7VLfcYOQpLwIfX X-ML-Name: ruby-core X-Mail-Count: 71220 Subject: [ruby-core:71220] [Ruby trunk - Feature #11537] Introduce "Safe navigation operator" 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: , Errors-To: ruby-core-bounces@ruby-lang.org Sender: "ruby-core" Issue #11537 has been updated by Yusuke Endoh. Rodrigo Rosenfeld Rosas wrote: > Everyday learning a new hidden feature from Ruby ;) Me too. Ruby has infinite possibilities. -- Yusuke Endoh ---------------------------------------- Feature #11537: Introduce "Safe navigation operator" https://bugs.ruby-lang.org/issues/11537#change-54600 * Author: Hiroshi SHIBATA * Status: Closed * Priority: Normal * Assignee: Yukihiro Matsumoto ---------------------------------------- I sometimes write following code with rails application: ```ruby u = User.find(id) if u && u.profile && u.profile.thumbnails && u.profiles.thumbnails.large ... ``` or ```ruby # Use ActiveSupport if u.try!(:profile).try!(:thumbnails).try!(:large) ... ``` I hope to write shortly above code. Groovy has above operator named "Safe navigation operator" with "`?.`" syntax. Ruby can't use "`?.`" operator. Can we use "`.?`" syntax. like this: ```ruby u = User.find(id) u.?profile.?thumbnails.?large ``` Matz. How do you think about this? -- https://bugs.ruby-lang.org/