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// 傳統寫法
var robot = Robot();
robot.name = "小明";
robot.level = 10;
robot.wakeUp();

// 用 .. 串接寫法 (簡潔很多)
var robot = Robot()
  ..name = "小明"
  ..level = 10
  ..wakeUp();

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var listenController = TextEditingController()
  ..text = updatedOptions.listenFor.toString();