From: Ronggen Pan <rpan@...>
Date: 2005-12-26T16:10:32+09:00
Subject: Re: Ruby Eventing (update)

Here's the latest <a 
href="http://competo.com/ruby/event.rb">event.rb</a>.

require 'event'

class CoffeeMaker
  event :brew_ready, :brewing_started
 def brew
  on_brewing_started('new brew started')
  #brewing ...
  on_brew_ready('coffee is ready!')
 end
end

class CoffeeLover
  def get_coffee(*args)
    puts "thanks for the coffee!"
  end
end

cm = CoffeeMaker.new
cm.brewing_started('+s1') {|*args| puts args}
cm.brew_ready('+s2') {|*args| puts args}
cl = CoffeeLover.new
cm.brew_ready('+s3') {|*args| cl.get_coffee args} # add sink with +
cm.brew

cm.brew_ready('-s3') #remove sink with -
cm.brew

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