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Translate 06, 07 #10

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Translate 06, 07 #10

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Merge pull request #1 from SeonHyungJo/master
BKJang Apr 28, 2019
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6 changes: 3 additions & 3 deletions README.md
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}
```

6. ### When to use a Class Component over a Function Component?

If the component needs *state or lifecycle methods* then use class component otherwise use function component.
6. ### 언제 Function Component 대신에 Class Component를 사용하나?

만약, 컴포넌트가 `state나 lifecycle 메서드`가 필요하다면 class 컴포넌트를 사용하고 아니라면 function 컴포넌트를 사용한다.
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7. ### What are Pure Components?

*`React.PureComponent`* is exactly the same as *`React.Component`* except that it handles the `shouldComponentUpdate()` method for you. When props or state changes, *PureComponent* will do a shallow comparison on both props and state. *Component* on the other hand won't compare current props and state to next out of the box. Thus, the component will re-render by default whenever `shouldComponentUpdate` is called.
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