Foundations
What is Decorator?
Adds behavior by wrapping an object in layers. Each wrapper adds one concern without changing the core type.
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In real work
Decorator: LoggingDecorator wraps HttpClient to log requests without editing the base client.
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.