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Ruby code posted
created at 08 May 00:03

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class ObscuringReferences
  attr_reader :data

  def initialize(data)
    @data = data
  end

  def diameters
    data.map { |d| d[0] + (d[1] * 2)}
  end
end

# このクラスの初期化には2次元配列が必要
# @data = [[1,2], [3,4], [5,6]]
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