📜  颤振单例 - Dart 代码示例

📅  最后修改于: 2022-03-11 14:48:07.230000             🧑  作者: Mango

代码示例2
class Singleton {
  static final Singleton _singleton = Singleton._internal();

  factory Singleton() {
    return _singleton;
  }

  Singleton._internal();
}