What are React Hooks, and how have they changed the way we write React applications?

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React Hooks are functions introduced in React 16.8 that allow developers to use state and other React features in functional components, eliminating the need for class components in many scenarios. Before hooks, stateful logic (like state, lifecycle methods, and side effects) was only available in class components, leading to more complex and harder-to-manage code.

The most commonly used hooks include:

• Use State () - for managing local component state,

• Use Effect () -  for performing side effects like fetching data or subscriptions,

• Use Context() -  for accessing React context directly,

• Use ref(), Use Memo(), and Use Callback() - for optimizing performance and referencing DOM elements.

Hooks have significantly changed how we write React apps by promoting function components as the standard, simplifying component logic, and improving code reuse through custom hooks. Instead of scattering related logic across lifecycle methods, hooks allow grouping by behavior. This leads to cleaner, more maintainable code. They also make testing and refactoring easier, and foster better separation of concerns.

Overall, React Hooks have modernized React development, enabling more concise, readable, and flexible code, while reducing reliance on classes. This shift has influenced the broader React ecosystem, including libraries and patterns.

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