Behavioral Design Patterns in C++ - Introduction-Iterator

The video tutorial explains the iterator design pattern, which allows sequential access to elements in an aggregate without exposing its underlying structure. It highlights the challenges of aggregates managing traversal and the benefits of using iterators, such as flexibility and a uniform interface. The structure of the pattern is detailed, including base and concrete iterators. Different types of iterators, internal and external, are discussed, along with their implementation in C, including advanced features like memory management and polymorphism.

What is an iterator and what role does it play in accessing elements of an aggregate?

Explain the concept of encapsulation in the context of aggregates and iterators.

What are the two main objectives that the iterator pattern aims to achieve?

Describe the structure of the iterator pattern and its components.

What are the differences between internal and external iterators?

How can iterators provide dynamic polymorphic iteration?

What advantages does static polymorphic iteration using templates offer in C?