当您可以将const添加到构造函数中时，为什么要在比较过程中将operator==或一些helper包添加到状态/事件中呢？

abstract class PersonBase {
  const PersonBase();
}

class Person extends PersonBase {
  const Person({required this.name});

  final String name;
}

abstract class PersonBase {}

class Person extends PersonBase {
  Person({required this.name});

  final String name;

  @override
  bool operator ==(Object other) {
    if (identical(this, other)) return true;
  
    return other is Person &&
      other.name == name;
  }

  @override
  int get hashCode => name.hashCode;
}