Foundations
What is Iterator?
Walks through a collection one item at a time without exposing how it is stored inside.
Learn this term every day on iPhone.
One hand-written term. A real workplace example. Thirty seconds before your day gets loud.
In real work
Iterator: for item in playlist walks the list so the UI does not care if storage is an array or a link.
How is this different from Googling it?
Google gives a definition. Prompthaus pairs each term with how it shows up in standups, PRs, prompts, and design reviews—then quizzes you until the word sticks. One term a day on iPhone.