Dynamic stuff for Austin

demo.rb

class Person
  def initialize(name)
    @name = name
  end
end

austin = Person.new("Austin")

austin.define_singleton_method "speak" do
  "Hi, my name is #{@name}"
end

austin.speak
#=> Hi, my name is Austin

Person.class_eval do
  def speak
    "Hi my name is #{@name}"
  end
end

dan = Person.new("Dan")

dan.speak
#=> "Hi, my name is Dan"