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はじめに

移植やってます。

cls (Python)

class WritableIndex(object):
    @classmethod
    def load(cls, fp):
        inst = cls()

@classmethodはRubyでいうところの特異メソッドで行けそうな気もしますが、clsは厄介そう。
上記ですと、cls()を呼んだとき、現在のクラスがインスタンス化されます。

どうする? (Ruby)

class WritableIndex
  def self.load(fp)
    inst = self.new
    inst.myprint(fp)
  end

  def myprint(args)
    print(args)
  end
end

WritableIndex.load("cls")

# cls

取り敢えずself.newで。
ちなみに30箇所で使用されている様子。

メモ

  • Python の cls を学習した
  • 道のりは遠そう
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