Why is copy assignment operator implicitly deleted?
An implicitly-declared copy assignment operator for class T is defined as deleted if any of the following is true: T has a user-declared move constructor; T has a user-declared move assignment operator.
What is implicitly deleted copy constructor?
Deleted implicitly-declared copy constructor T has non-static data members that cannot be copied (have deleted, inaccessible, or ambiguous copy constructors); T has direct or virtual base class that cannot be copied (has deleted, inaccessible, or ambiguous copy constructors);
What happens if you don't define a copy assignment operator?
If you don't declare a copy constructor, the compiler generates a member-wise copy constructor for you. Similarly, if you don't declare a copy assignment operator, the compiler generates a member-wise copy assignment operator for you.
What does a copy assignment operator do?
The Copy constructor and the assignment operators are used to initializing one object to another object. The main difference between them is that the copy constructor creates a separate memory block for the new object. But the assignment operator does not make new memory space.