--- attr_accessor(name,  ... )

    ° name Фɤ߹ߥ᥽åɤȽ񤭤ߥ᥽åɤξ
    ޤname  Symbol ʸǻꤷޤ
    Ͼ nil Ǥ

    Υ᥽åɤ᥽åɤϰʲ̤Ǥ

      def name
        @name
      end
      def name=(val)
        @name = val
      end

