[#23457] [Bug #1471] "Mutual join" deadlock detection faulty in 1.8.6 and 1.8.7 — John Carter <redmine@...>

Bug #1471: "Mutual join" deadlock detection faulty in 1.8.6 and 1.8.7

17 messages 2009/05/15

[#23483] [Bug #1478] Ruby archive — Oleg Puchinin <redmine@...>

Bug #1478: Ruby archive

29 messages 2009/05/16
[#29225] [Feature #1478] Ruby archive — Luis Lavena <redmine@...> 2010/04/02

Issue #1478 has been updated by Luis Lavena.

[#30345] Re: [Feature #1478] Ruby archive — "NAKAMURA, Hiroshi" <nakahiro@...> 2010/05/21

On Fri, Apr 2, 2010 at 17:13, Luis Lavena <redmine@ruby-lang.org> wrote:

[#30346] Re: [Feature #1478] Ruby archive — Jonathan Nielsen <jonathan@...> 2010/05/21

> Thanks for your comment.

[#30347] Re: [Feature #1478] Ruby archive — Jonathan Nielsen <jonathan@...> 2010/05/21

OK Hiroshi, I read some of the comments earlier in the thread that I

[#30355] Re: [Feature #1478] Ruby archive — Caleb Clausen <vikkous@...> 2010/05/21

On 5/20/10, Jonathan Nielsen <jonathan@jmnet.us> wrote:

[#30364] Re: [Feature #1478] Ruby archive — Benoit Daloze <eregontp@...> 2010/05/22

Hi,

[#23505] [Bug #1494] tempfile#unlink may silently fail on windows — Nicholas Manning <redmine@...>

Bug #1494: tempfile#unlink may silently fail on windows

19 messages 2009/05/19

[#23572] [Bug #1525] Deadlock in Ruby 1.9's VM caused by ConditionVariable.wait and fork? — Hongli Lai <redmine@...>

Bug #1525: Deadlock in Ruby 1.9's VM caused by ConditionVariable.wait and fork?

27 messages 2009/05/27

[#23595] Meaning of RUBY_PLATFORM — Rick DeNatale <rick.denatale@...>

The RUBY_PLATFORM constant is documented in the latest Pickaxe as "The

17 messages 2009/05/28
[#23596] Re: Meaning of RUBY_PLATFORM — Luis Lavena <luislavena@...> 2009/05/28

On Thu, May 28, 2009 at 3:41 PM, Rick DeNatale <rick.denatale@gmail.com> wrote:

[#23602] Re: Meaning of RUBY_PLATFORM — Rick DeNatale <rick.denatale@...> 2009/05/28

On Thu, May 28, 2009 at 2:52 PM, Luis Lavena <luislavena@gmail.com> wrote:

[#23608] Re: Meaning of RUBY_PLATFORM — Luis Lavena <luislavena@...> 2009/05/28

On Thu, May 28, 2009 at 7:08 PM, Rick DeNatale <rick.denatale@gmail.com> wrote:

[#23609] Re: Meaning of RUBY_PLATFORM — Rick DeNatale <rick.denatale@...> 2009/05/29

On Thu, May 28, 2009 at 7:22 PM, Luis Lavena <luislavena@gmail.com> wrote:

[ruby-core:23557] [Bug #1516] Matrix#determinant Documentation Error

From: Run Paint Run Run <redmine@...>
Date: 2009-05-25 21:35:55 UTC
List: ruby-core #23557
Bug #1516: Matrix#determinant Documentation Error
http://redmine.ruby-lang.org/issues/show/1516

Author: Run Paint Run Run
Status: Open, Priority: Normal
ruby -v: ruby 1.8.7 (2008-08-11 patchlevel 72) [i486-linux] / ruby 1.9.0 (2008-06-20 revision 17482) [i486-linux]

The rdoc for Matrix#determinant contains the following example on Ruby 1.8.7 (ruby 1.8.7 (2008-08-11 patchlevel 72) [i486-linux]):

    Matrix[[7,6], [3,9]].determinant
    => 63

This is indeed what that method returns, but is not the determinant of that matrix. The correct determinant is 45. There's presumably a reason why Matrix doesn't simply require 'mathn', with which this example works, but could this example either have 'require 'mathn'' prefixed, or be changed to one that works? (Better would be to backport the changes from 1.9, but I'm not sure how difficult this is).

The rdoc for lib/matrix.rb has been updated in the trunk so this example appears as:

    Matrix[[7,6], [3,9]].determinant
    => 63.0

However, in 1.9.0 (ruby 1.9.0 (2008-06-20 revision 17482) [i486-linux]), at least, .determinant does return the correct answer:

    Matrix[[7,6], [3,9]].determinant
    => Rational(45, 1)

So the trunk documentation can be updated to show the correct answer.


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