Ruby Modules and Duck-typing

ducks.rb

module Drinker
  # can do, same implementation thank duck typing
  def resolve_thirst
    drink_water
  end
end

class Person
  include Drinker

  # can do, different implementation
  def drink_water
    take_glass
    pour_glass_into_mouth
    swallow
  end
end

class Dog
  include Drinker

  # can do, different implementation
  def drink_water
    water_source = find_water_source
    shove_face_into(water_source)
  end

  def find_water_source
    return lake if lake = Lake.nearby
    return toilet if location.in_home?
    raise WaterNotFoundError
  end
end