To manage a class with pointer members, we must define all three copy-control members: the copy constructor, assignment operator, and the destructor.

为了管理具有指针成员的类，必须定义三个复制控制成员：复制构造函数、赋值操作符和析构函数。

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The only reliable way to do it is to also export a class factory function, a simple function that USES the new operator to create the object and return the pointer.

唯一可靠的方法就是也出口类工厂函数，一个简单的函数，使用新的操作符来创建对象并返回的指针。

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Also, the dereference operator, which allows reading and writing to a pointer.

另外还用作取消引用运算符，允许读取和写入指针。

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