One way to implement the Iterator Design Pattern in Swift is through the use of protocol and class inheritance. We can define a protocol called IteratorProtocol that includes a method next() -> T? which returns the next element in the collection, or nil if there are no more elements.
The Iterator Design Pattern in Swift provides a clean and concise way to access and manipulate the elements in a collection without needing to know its specific implementation details. This can be especially useful when working with complex data structures, as it allows for easier abstraction and code reusability.