Behavioral Design Patterns in C++ - Containers - V (ListIterator)

The video tutorial explains the implementation of an iterator for the list class, making the node a private member and using a friend class. It introduces polymorphic iteration, allowing a single function to iterate over different containers. The tutorial also covers memory management using smart pointers to handle iterators created on the heap. The advantages of the iterator pattern are highlighted, including a consistent API, encapsulation, and the ability to add new iterators without affecting client code. Future improvements and the potential for different traversal algorithms are also discussed.

What is the purpose of making the node a private member of the list class?

Explain how polymorphic iteration is achieved in the context of the iterator pattern.

What are the advantages of using smart pointers for iterators?

How does the iterator pattern provide a consistent API for users?

Discuss how the iterator pattern allows for the addition of new containers and iterators without affecting client code.