This post originated from an RSS feed registered with Ruby Buzz by Ryan Davis. Original Post: MuffDaddy! The Ultimate Rapper! (Word) Feed Title: Polishing Ruby Feed URL: http://blog.zenspider.com/index.rdf Feed Description: Musings on Ruby and the Ruby Community... Latest Ruby Buzz Posts Latest Ruby Buzz Posts by Ryan Davis Latest Posts From Polishing Ruby

module CheapoTracer

  include MuffDaddy

  RAP_METHOD_NAME = :__trace__

  def __trace__
    @__trace = 0 unless defined? @__trace
    print "  " * @__trace
    print "#{@__trace}: "
    @__trace += 1
    yield
    @__trace -= 1
  end

end

class Untraced
  def something
    puts "Miiiiisery!"
    something_else
  end

  def something_else
    puts "Decay!"
  end
end

class Traced
  include CheapoTracer

  def method1
    puts "I'm dead too!"
  end
end

w1 = Untraced.new
w1.something

w1.extend CheapoTracer
w1.something

w2 = Untraced.new
w2.something

w3 = Traced.new
w3.method1

outputs:

Miiiiisery!
Decay!
0: Miiiiisery!
  1: Decay!
Miiiiisery!
Decay!
0: I'm dead too!