# Threading example in FAQ 4.2 is slightly broken? **URL:** \ **Category:** Ruby\ **Created:** [April 21, 2006, 10:24am UTC](https://www.ruby-forum.com/t/threading-example-in-faq-4-2-is-slightly-broken/58410 "2006-04-21T10:24:54Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![nctodc](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/bc79bd/32.png) [@nctodc](https://www.ruby-forum.com/u/nctodc)\ **Post date:** [April 21, 2006, 10:24am UTC](https://www.ruby-forum.com/t/threading-example-in-faq-4-2-is-slightly-broken/58410/1 "2006-04-21T10:24:54Z")
Hi all, I just ran the example at the end of FAQ 4.2 ``` http://www.rubycentral.com/faq/rubyfaq-4.html#ss4.2 ``` The FAQ text says this produces: > onetwo: : 00 > > onetwo: : 11 > > onetwo: : 33 This confused me, so I ran the code and got: > one: 0 > two: 0 > one: 1 > two: 1 > one: 3 > two: 3 which made more sense. OK, so thread scheduling is nondetermininistic and there’s no mutual exclusion on stdout, so I can see how the output given in the FAQ entry _could_ happen - however, I think the version I saw demonstrates the FAQ’s point more clearly. Who should I tell about this? Raise a bug? Or is raising the alarm hereabouts sufficient? 🙂 Thanks, -Andy ---
**Author:** ![nctodc](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/bc79bd/32.png) [@nctodc](https://www.ruby-forum.com/u/nctodc)\ **Post date:** [April 21, 2006, 1:11pm UTC](https://www.ruby-forum.com/t/threading-example-in-faq-4-2-is-slightly-broken/58410/2 "2006-04-21T13:11:59Z")
On 4/21/06, Andy G. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > one: 3 > > Thanks, > > -Andy > > – > Andy G. > Computer Science Department > University of Wales Swansea > [http://www.cs.swan.ac.uk/~csandy/](http://www.cs.swan.ac.uk/~csandy/) > > Hmm why don’t you drop a mail to the FAQ maintainer mailto: > removed\_email\_address@domain.invalid ? > Personally I fail to see the point of the example but that might just be > because I am tired. > Hope that helps > Robert > – > Deux choses sont infinies : l’univers et la bêtise humaine ; en ce qui > concerne l’univers, je n’en ai pas acquis la certitude absolue. - Albert Einstein ---
**Author:** ![nctodc](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/bc79bd/32.png) [@nctodc](https://www.ruby-forum.com/u/nctodc)\ **Post date:** [April 21, 2006, 1:24pm UTC](https://www.ruby-forum.com/t/threading-example-in-faq-4-2-is-slightly-broken/58410/3 "2006-04-21T13:24:19Z")
Hi – On Fri, 21 Apr 2006, Robert D. wrote: > > > onetwo: : 00 > > > two: 1 > > > Hmm why don’t you drop a mail to the FAQ maintainer mailto: > > > removed\_email\_address@domain.invalid ? Actually the FAQ is now maintained at Ruby Garden: [http://www.rubygarden.org/faq](http://www.rubygarden.org/faq). The old one, at [rubycentral.com](http://rubycentral.com), should connect you to the new one. David – David A. Black (removed\_email\_address@domain.invalid) Ruby Power and Light, LLC ([http://www.rubypowerandlight.com](http://www.rubypowerandlight.com)) “Ruby for Rails” PDF now on sale! [Ruby for Rails](http://www.manning.com/black) Paper version coming in early May! ---
**Author:** ![nctodc](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/bc79bd/32.png) [@nctodc](https://www.ruby-forum.com/u/nctodc)\ **Post date:** [April 21, 2006, 1:33pm UTC](https://www.ruby-forum.com/t/threading-example-in-faq-4-2-is-slightly-broken/58410/4 "2006-04-21T13:33:32Z")
On Fri, Apr 21, 2006 at 08:22:51PM +0900, removed\_email\_address@domain.invalid wrote: > You may be looking at the old FAQ. Have a look at: > > [http://www.rubygarden.org/faq/entry/show/24](http://www.rubygarden.org/faq/entry/show/24) > > I think that’s the one you mean, and it looks OK. Aha. Yes indeed. In that case, there are two issues: 1. Googling for “ruby faq” gives the old version as the top hit. 2. I didn’t get redirected to the new version from the old version. I’ll let Dave T. know. Thanks. 🙂 -Andy ---
**Author:** ![nctodc](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/bc79bd/32.png) [@nctodc](https://www.ruby-forum.com/u/nctodc)\ **Post date:** [April 21, 2006, 2:53pm UTC](https://www.ruby-forum.com/t/threading-example-in-faq-4-2-is-slightly-broken/58410/5 "2006-04-21T14:53:45Z")
On 4/21/06, Andy G. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > In that case, there are two issues: > > 1. Googling for “ruby faq” gives the old version as the top hit. > > 2. I didn’t get redirected to the new version from the old version. > > I’ll let Dave T. know. Thanks. 🙂 > > -Andy I think Hal F. is in charge of the FAQ now. Curt ---
**Author:** ![nctodc](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/bc79bd/32.png) [@nctodc](https://www.ruby-forum.com/u/nctodc)\ **Post date:** [April 21, 2006, 1:24pm UTC](https://www.ruby-forum.com/t/threading-example-in-faq-4-2-is-slightly-broken/58410/6 "2006-04-21T13:24:23Z")
Hi – On Fri, 21 Apr 2006, Andy G. wrote: > > onetwo: : 11 > > two: 3 > > which made more sense. OK, so thread scheduling is nondetermininistic > and there’s no mutual exclusion on stdout, so I can see how the output > given in the FAQ entry _could_ happen - however, I think the version I > saw demonstrates the FAQ’s point more clearly. > > Who should I tell about this? Raise a bug? Or is raising the alarm > hereabouts sufficient? 🙂 You may be looking at the old FAQ. Have a look at: [http://www.rubygarden.org/faq/entry/show/24](http://www.rubygarden.org/faq/entry/show/24) I think that’s the one you mean, and it looks OK. David – David A. Black (removed\_email\_address@domain.invalid) Ruby Power and Light, LLC ([http://www.rubypowerandlight.com](http://www.rubypowerandlight.com)) “Ruby for Rails” PDF now on sale! [Ruby for Rails](http://www.manning.com/black) Paper version coming in early May! ---
**Author:** ![nctodc](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/bc79bd/32.png) [@nctodc](https://www.ruby-forum.com/u/nctodc)\ **Post date:** [April 23, 2006, 1:46am UTC](https://www.ruby-forum.com/t/threading-example-in-faq-4-2-is-slightly-broken/58410/7 "2006-04-23T01:46:04Z")
On 4/21/06, Logan C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > On Apr 21, 2006, at 8:53 AM, Curt H. wrote: > > > I think Hal F. is in charge of the FAQ now. > > > > Curt > > I believe Hal F. is in charge of the newsgroup/ML faq, not the > ruby faq. There’s a newsgroup/ML faq? What’s the URL? ---
**Author:** ![nctodc](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/bc79bd/32.png) [@nctodc](https://www.ruby-forum.com/u/nctodc)\ **Post date:** [April 23, 2006, 1:52am UTC](https://www.ruby-forum.com/t/threading-example-in-faq-4-2-is-slightly-broken/58410/8 "2006-04-23T01:52:14Z")
On 4/22/06, John G. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > > There’s a newsgroup/ML faq? What’s the URL? Whoops. Sorry. I guess this: [http://rubyhacker.com/clrFAQ.html](http://rubyhacker.com/clrFAQ.html) is it. ---
**Author:** ![nctodc](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/bc79bd/32.png) [@nctodc](https://www.ruby-forum.com/u/nctodc)\ **Post date:** [April 21, 2006, 4:36pm UTC](https://www.ruby-forum.com/t/threading-example-in-faq-4-2-is-slightly-broken/58410/9 "2006-04-21T16:36:19Z")
On Apr 21, 2006, at 8:53 AM, Curt H. wrote: > I think Hal F. is in charge of the FAQ now. > > Curt I believe Hal F. is in charge of the newsgroup/ML faq, not the ruby faq.