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Hooks in Depth

Pause here and make sure the main ideas feel clear before moving to the next chapter.

Review recommended

What you should understand now

Use common hooks without making components harder than they need to be.

useRef basics

Keep a value without causing a render.

useMemo basics

Memoize expensive calculated values.

Custom hooks

Extract reusable stateful logic.

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Before you move on

Use this quick review if anything still feels unclear.

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