Iterator Pattern

The Iterator Pattern is a design pattern that provides a way to access the elements of a collection object sequentially without exposing its underlying representation. In C#, this pattern can be implemented using IEnumerable<T> and IEnumerator<T> interfaces. Here’s a detailed explanation and example of implementing the Iterator Pattern in C#.

Components of the Iterator Pattern

1. Iterator Interface (IEnumerator<T>):

   • Provides methods for traversing elements in the collection (e.g., MoveNext, Current, Reset).

2. Aggregate Interface (IEnumerable<T>):

   • Provides a method to create an iterator (e.g., GetEnumerator).

3. Concrete Iterator:

   • Implements the iterator interface to traverse the collection.

4. Concrete Aggregate:

   • Implements the aggregate interface to return an iterator.