From: Pit Capitain <pit@...>
Date: 2006-08-17T05:24:05+09:00
Subject: Re: goto function?

Simen Edvardsen schrieb:
> There's no way to do:
> 
> goto :a
> label :a

Right, but with some evil Ruby code, this is possible:

   irb(main):001:0> require "goto"
   => true
   irb(main):002:0> with_goto do
   irb(main):003:1*
   irb(main):004:1*   puts 1
   irb(main):005:1>   goto :b
   irb(main):006:1>
   irb(main):007:1* label :a
   irb(main):008:1>   puts 3
   irb(main):009:1>   goto :c
   irb(main):010:1>
   irb(main):011:1* label :b
   irb(main):012:1>   puts 2
   irb(main):013:1>   goto :a
   irb(main):014:1>
   irb(main):015:1* label :c
   irb(main):016:1>   puts 4
   irb(main):017:1>
   irb(main):018:1* end
   1
   2
   3
   4
   => nil
   irb(main):019:0>

No, I won't show the implementation yet. See 
http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/202387

Regards,
Pit