a

Ruby code posted
created at 02 Jun 14:18

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class Bicycle
  attr_reader :size, :chain, :tire_size

  def initialize(**opts)
    @size = opts[:size]
    @chain = opts[:chain] || default_chain
    @tire_size = opts[:tire_size] || default_tire_size
  end

  def default_chain
    "11-speed"
  end
  # ...
end

class RoadBike < Bicycle
  # ...
  def default_tire_size
    "23"
  end
end

class MountainBike < Bicycle
  # ...
  def default_tire_size
    "2.1"
  end
end
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