What are the best practices for using polymorphism in C++?

What are the best practices for using polymorphism in C++?

Polymorphism in C++ allows methods to do different things based on the object it is acting upon. Best practices include using virtual destructors, keeping interfaces clean, and favoring composition over inheritance.

Can you explain why virtual destructors are important?

Virtual destructors ensure that the derived class's destructor is called when an object is deleted through a base class pointer, preventing resource leaks.

What is the difference between compile-time and run-time polymorphism?

Compile-time polymorphism is achieved through function overloading and operator overloading, while run-time polymorphism is achieved through inheritance and virtual functions.

How can I implement polymorphism using interfaces?

You can implement polymorphism using interfaces by defining pure virtual functions in a base class and then overriding them in derived classes.

Are there any common pitfalls to avoid with polymorphism?

Yes, common pitfalls include not using virtual destructors, excessive use of inheritance, and not considering object slicing.