From: "Wolfgang Nádasi-Donner" <ed.odanow@...>
Date: 2007-11-15T03:30:16+09:00
Subject: Re: Proc#hash returns different values for same body

I made another comparison with Ruby 1.8...

C:\Dokumente und Einstellungen\wolfgang>ruby -v
ruby 1.8.6 (2007-03-13 patchlevel 0) [i386-mswin32]

C:\Dokumente und Einstellungen\wolfgang>irb
irb(main):001:0> p = lambda{}
=> #<Proc:0x00000000@(irb):1>
irb(main):002:0> proc(&p).hash
=> 22169910
irb(main):003:0> proc(&p).hash
=> 22159870
irb(main):004:0> proc(&p).hash
=> 22633070
irb(main):005:0> proc(&p).hash
=> 22622090
irb(main):006:0> exit

C:\Dokumente und Einstellungen\wolfgang>ruby19 -v
ruby 1.9.0 (2007-11-13 patchlevel 0) [i386-mingw32]

C:\Dokumente und Einstellungen\wolfgang>irb19
irb(main):001:0> p = lambda{}
=> #<Proc:0x9935a0@(irb):1 (lambda)>
irb(main):002:0> proc(&p).hash
=> 4834015
irb(main):003:0> proc(&p).hash
=> 4834015
irb(main):004:0> proc(&p).hash
=> 4834015
irb(main):005:0> exit

...and would like to give the interpretation, that Proc#hash returns in Ruby 1.9 
the same hash code, if the same block is used in form of a proc object. In Ruby 
1.8 this is not the case.

Is this somehow (~English phrasing problems) the correct interpretation? - If 
"yes" then the "ri" result together with the example in 
http://eigenclass.org/hiki.rb?Changes+in+Ruby+1.9#l165 is misleading.

Wolfgang N��dasi-Donner