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{
  "command": "ruby -rubygems -r./custom_plan -eZeus.go",

  "plan": {
    "boot": {
      "default_bundle": {
        "development_environment": {
          "prerake": {"rake": []},
          "runner": ["r"],
          "console": ["c"],

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custom_plan.rb 
zeus.json

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Qué?
Metaprogramming is code that writes code
Metafora lenguaje compilado - dinámico
Ruby es un lenguaje dinámico y orientado a objetos
Todo son mensajes que se pasan
Manejo de esos mensajes 
Dónde manejamos esos mensajes?
Ruby object model
  Open Classes
    Monkey Patchs

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class Computer
  def initialize(computer_id, data_source)
    @id = computer_id
    @data_source = data_source
  end
  def mouse
    info = @data_source.get_mouse_info(@id)
    price = @data_source.get_mouse_price(@id)
    result = "Mouse: #{info} ($#{price})"
    return "* #{result}" if price >= 100

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#This is a test

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List of cool links

• The Open Closed Principle

• When to Mock

• Architecture, Performance, and Games

• Applying Artificial Intelligence to Nintendo Tetris

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• The Open Closed Principle

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• When to Mock

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• Architecture, Performance, and Games

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• Applying Artificial Intelligence to Nintendo Tetris