From: Kristof Bastiaensen <kristof@...>
Date: 2004-04-12T21:44:20+09:00
Subject: Re: Continuation usage

On Mon, 12 Apr 2004 13:36:13 +0200, Patrick Roemer wrote:

> Your version looks really nice. I think it could fit nicely with the
> other continuation examples in the Ruby FAQ. Thanks.
> 

Thanks!
Maybe you are interested in the following code (if it
doesn't exist already).  In implements a kind of goto:

class Mark
  def initialize
    @cc = callcc { |cc| cc }
  end
  def goto #should be called teleport
    @cc.call(@cc)
  end
end

#-- (the example is quite stupid, but just to show the concept)

irb(main):006:0> begin
irb(main):007:1* a = Mark.new
irb(main):008:1> a.goto if gets.chomp != "stop"
irb(main):009:1> end
Hi, there
Everything ok!
stop
nil
irb(main):010:0> 

#----