Iterator Interface (IIterator<T>):?

Short answer: The IIterator<T> interface defines two primary methods: ■ HasNext(): Checks if there are more elements to iterate over. ■ Next(): Returns the next element in the collection. public interface IIterator<T>

Example code

{ bool HasNext(); T Next(); }

Real-world example (ShopNest)

Use a GoF pattern in ShopNest only when it removes duplication or makes a change safer—explain the problem it solves in the interview.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.