Navigating Through a Menu System:?

Short answer: In graphical user interfaces (GUIs), iterating through a complex hierarchical menu structure can be achieved using the Iterator Pattern. Each menu can be an aggregate, and each menu item can be iterated over using an iterator.

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.