Sword refers to offer notes

1. When defining the value assignment descriptor member function of a class, pay attention to the following points:

1) determine whether to assign a value to yourself

2) the return value is a reference to the const class (for continuous assignment)

3) The parameter is a reference to the const class.

4) if a pointer exists in the data member, make sure to copy it in depth and release the memory pointed to by the pointer.

 

2. The copy constructor of the class must not use this type of variable as a parameter, and will not be able to compile it. If a variable is used, the form parameter and the real parameter must be copied, and the copy constructor will be called again. This leads to an endless loop until Memory leakage.

 

3.

Sword refers to offer notes