Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!aioe.org!feeder.news-service.com!de-l.enfer-du-nord.net!feeder2.enfer-du-nord.net!talisker.lacave.net!lacave.net!not-for-mail From: Justin Collins Newsgroups: comp.lang.ruby Subject: Re: Is everything object ? Date: Thu, 28 Apr 2011 23:37:10 -0500 Organization: Service de news de lacave.net Lines: 22 Message-ID: <4DBA4062.70101@ucla.edu> References: <62f261dc2ccebf22a5a04124a9b3bc7f@ruby-forum.com> NNTP-Posting-Host: bristol.highgroove.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Trace: talisker.lacave.net 1304051850 24947 65.111.164.187 (29 Apr 2011 04:37:30 GMT) X-Complaints-To: abuse@lacave.net NNTP-Posting-Date: Fri, 29 Apr 2011 04:37:30 +0000 (UTC) In-Reply-To: <62f261dc2ccebf22a5a04124a9b3bc7f@ruby-forum.com> X-Received-From: This message has been automatically forwarded from the ruby-talk mailing list by a gateway at comp.lang.ruby. If it is SPAM, it did not originate at comp.lang.ruby. Please report the original sender, and not us. Thanks! For more details about this gateway, please visit: http://blog.grayproductions.net/categories/the_gateway X-Mail-Count: 382363 X-Ml-Name: ruby-talk X-Rubymirror: Yes X-Ruby-Talk: <4DBA4062.70101@ucla.edu> Xref: x330-a1.tempe.blueboxinc.net comp.lang.ruby:3679 On 04/28/2011 02:48 AM, amir e. wrote: > Hi > A very important principle in Ruby is that every thing is object. > I read somewhere that there is no primitive operation in Ruby in > traditional form and every operation is class. > Now if every thing is object , then why + , - , * , ^ , ^^ isn't > class Although they are primitive operation ? > > ps : If you test these codes , error happen : +.class -.class *.class Actually, "everything is an object" is probably a mantra Rubyists should drop, because people will get confused when they find they can't call methods on every piece of Ruby code. I would say all values in Ruby are objects and all expressions return a value. But there are (admittedly few) things which are not expressions. The best thing is to not worry too much about absolutes and just enjoy exploring. -Justin