Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!aioe.org!feeder.news-service.com!de-l.enfer-du-nord.net!feeder1.enfer-du-nord.net!talisker.lacave.net!lacave.net!not-for-mail From: Vahagn Hayrapetyan Newsgroups: comp.lang.ruby Subject: Re: Calling to_enum on a MatchData object Date: Thu, 14 Apr 2011 11:13:07 -0500 Organization: Service de news de lacave.net Lines: 31 Message-ID: References: <840b7dcf34f7c1ae6b2b9d80a6b55b69@ruby-forum.com> <7de49bdd11ef30170f71c5d9f9258f9b@ruby-forum.com> <2ec5aead98ee85153308eb7b43e82adf@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 1302797606 54869 65.111.164.187 (14 Apr 2011 16:13:26 GMT) X-Complaints-To: abuse@lacave.net NNTP-Posting-Date: Thu, 14 Apr 2011 16:13:26 +0000 (UTC) In-Reply-To: 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: 381539 X-Ml-Name: ruby-talk X-Rubymirror: Yes X-Ruby-Talk: Xref: x330-a1.tempe.blueboxinc.net comp.lang.ruby:2855 > Posted by Robert K. (robert_k78) on 2011-04-13 13:45 > The logic is a bit tricky. :-) The Enumerator::Generator is just > something which can enumerate something. There is no infinite loop > until you start iterating that instance via #each or any other method > defined in Enumerable. Actually the loop is "interrupted" every time > "y << num" is invoked. > OK. So I guess this syntax: e = Enumerator.new do |y| (0..9).cycle do |num| y << num end end Is more declarative in that it just declares an enumerator without setting off the infinite loop inside. To execute the loop one needs something like: e.take(15) And then there is no infinite loop either, as the amount of iterations is scoped by the argument to take(). Great examples in your post, I appreciate it! -- Posted via http://www.ruby-forum.com/.