From ruby-talk-admin@ruby-lang.org Thu Dec 15 20:04:27 2005 Received: from kankan.nagaokaut.ac.jp (kankan.nagaokaut.ac.jp [133.44.2.24]) by blade.nagaokaut.ac.jp (8.12.3/8.12.3/Debian-6.6) with ESMTP id jBFB4RZk011271; Thu, 15 Dec 2005 20:04:27 +0900 Received: from funfun.nagaokaut.ac.jp (funfun.nagaokaut.ac.jp [133.44.2.201]) by kankan.nagaokaut.ac.jp (Postfix) with ESMTP id C49D25A5F; Thu, 15 Dec 2005 20:04:27 +0900 (JST) Received: from localhost (localhost.nagaokaut.ac.jp [127.0.0.1]) by funfun.nagaokaut.ac.jp (Postfix) with ESMTP id D0F6CF04866; Thu, 15 Dec 2005 20:04:30 +0900 (JST) Received: from voscc.nagaokaut.ac.jp (voscc.nagaokaut.ac.jp [133.44.1.100]) by funfun.nagaokaut.ac.jp (Postfix) with ESMTP id 80F74F04850; Thu, 15 Dec 2005 20:04:29 +0900 (JST) Received: from beryllium.ruby-lang.org (beryllium.ruby-lang.org [210.163.138.100]) by voscc.nagaokaut.ac.jp (Postfix) with ESMTP id A471563002C; Thu, 15 Dec 2005 20:04:31 +0900 (JST) Received: from beryllium.ruby-lang.org (beryllium.ruby-lang.org [127.0.0.1]) by beryllium.ruby-lang.org (Postfix) with ESMTP id AF4D833EA2; Thu, 15 Dec 2005 20:03:48 +0900 (JST) Received: from localhost (beryllium.ruby-lang.org [127.0.0.1]) by beryllium.ruby-lang.org (Postfix) with ESMTP id 9C21833F08 for ; Thu, 15 Dec 2005 20:03:20 +0900 (JST) Received: from beryllium.ruby-lang.org ([127.0.0.1]) by localhost (beryllium.ruby-lang.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 02855-05 for ; Thu, 15 Dec 2005 20:03:20 +0900 (JST) Received: from sinus.lauschmusik.de (sinus.lauschmusik.de [213.95.32.201]) by beryllium.ruby-lang.org (Postfix) with ESMTP id F19AA33ED3 for ; Thu, 15 Dec 2005 20:02:39 +0900 (JST) Received: from localhost ([127.0.0.1] helo=localhost.localdomain) by sinus.lauschmusik.de with esmtp (Exim 4.50) id 1Emqq9-0004YE-D7 for ruby-talk@ruby-lang.org; Thu, 15 Dec 2005 12:00:01 +0100 Received: from individual.net (individual.net) by sinus.lauschmusik.de with NTTP id 166177 for ; Thu Dec 15 12:00:01 CET 2005 Received: from [unknown] by individual.net (unknown) with NNTP id 166177 for ; Thu Dec 15 12:00:01 CET 2005 Received: from Usenet via a Usenet to mail gateway located at lauschmusik.de. This service provided as a courtesy to the ruby-talk mailing list. If this message is SPAM, its ultimate origin is Usenet, not this gateway program. All subscribers to the ruby-talk mailing list agree to receive the Usenet postings made to comp.lang.ruby via this gateway. Please see http://www.ruby-lang.org/ruby-talk-usenet-policy.html. Delivered-To: ruby-talk@ruby-lang.org Date: Thu, 15 Dec 2005 20:03:26 +0900 Posted: Thu, 15 Dec 2005 11:59:26 +0100 From: "Robert Klemme" Reply-To: ruby-talk@ruby-lang.org Subject: Re: treating 'string'+var as method To: ruby-talk@ruby-lang.org (ruby-talk ML) Message-Id: <40d0kmF19qn2vU1@individual.net> References: X-ML-Name: ruby-talk X-Mail-Count: 10 X-MLServer: fml [fml 4.0.3 release (20011202/4.0.3)]; post only (only members can post) X-ML-Info: If you have a question, send e-mail with the body "help" (without quotes) to the address ruby-talk-ctl@ruby-lang.org; help= X-Newsreader: Microsoft Outlook Express 6.00.2800.1506 X-Original-To: ruby-talk@ruby-lang.org Path: noris.net!npeer.de.kpn-eurorings.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail Newsgroups: comp.lang.ruby X-Trace: individual.net kHe2sutOTByBt+Rk2A93agaAh7LsqJjKnptdubKJYaIjsOwiE= X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1506 X-From-Usenet: see Received: header above. X-rubymirror: yes X-Virus-Scanned: by amavisd-new-20030616-p10 (Debian) at ruby-lang.org X-Spam-Checker-Version: SpamAssassin 3.0.3 (2005-04-27) on beryllium.ruby-lang.org X-Spam-Level: X-Spam-Status: No, score=-4.6 required=7.0 tests=AWL,BAYES_00, CONTENT_TYPE_PRESENT,MSGID_FROM_MTA_HEADER,PRIORITY_NO_NAME,QENCPTR2, RCVDFRMLOCALIP autolearn=no version=3.0.3 Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Precedence: bulk Lines: 20 List-Id: ruby-talk.ruby-lang.org List-Software: fml [fml 4.0.3 release (20011202/4.0.3)] List-Post: List-Owner: List-Help: List-Unsubscribe: X-Virus-Scanned: by AMaViS snapshot-20020531 bmgz wrote: > I am a new Ruby recruit (thanks to *ahem*, Rails).. > What is the best way to do this: > > * obj.'string'+var as a method? > > I am currently using: > > * obj.send('string'+var) > > ..which works fine, but is this correct or bad practice? That's ok. As Ross pointed out you can also use obj.send("string#{var}"). But I would not use eval - there's just too much that can go wrong security wise. Kind regards robert