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Questions - usecallback

Problems with multiple rerendering in React - Add to Favourite List example

I am building a small framework for e-commerce or blog app using React. One of the features of this framework is an "Add to Favourite List" function. The app tree works as follow : App file ...
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FJTAIL

reactjs

google-cloud-firestore

async-await

usecallback

react-memo

Votes: 0

Answers: 1

Latest Answer

Can you add useEffect hook in App.js file?. useEffect(()=>{},[favs])
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keerthi c

Why does useIsMounted return a callback instead of the value itself?

I'm referring to useIsMounted from usehooks-ts. I'm trying to understand why the function is returning useCallback(() => isMounted.current, []) instead of just isMounted.current. I've tested both i...
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Vee

reactjs

asynchronous

react-hooks

usecallback

Votes: 0

Answers: 1

Latest Answer

For whatever reason the authors of this useIsMounted hook decided to return a function instead of the boolean isMounted value. The returned function is memoized so it can be safely passed as a callbac...
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Drew Reese

Should I remove all unecessary usage of usecallback and memo in a React app?

im working on a relatively large React codebase and I've seen that the previous developers used memo and usecallback liberally with the thought that by using these would improve performance. Obviously...
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fardown

reactjs

usecallback

memo

react-usememo

react-usecallback

Votes: 0

Answers: 1

Latest Answer

So removing the one in your example actually COULD potentially change things. If you memoize it with useCallback, then the open function persists between renders, which means the function holds the sa...
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Jayce444

React Component re-renders in iOS but not in Android

I am developing an app using React Native and I'm struggling to figure out why my component re-renders in iOS but not in Android. I'm expecting it not to re-render, which means that the Android behavi...
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Lucas Antunes

android

ios

react-native

refresh

usecallback

Votes: 0

Answers: 1

Latest Answer

Does the same thing happen if you do it like this? const handleRightIconPress = ()=>{ goToSection(navigation, EnumInvoiceMainScreenArrivedFrom.MyInvoices) } <Header.NoTitle onBackPress={goBa...
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RodSar

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