react usememo vs usecallback

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Akats answered on May 14, 2021 Popularity 10/10 Helpfulness 3/10

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react usememo vs usecallback

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useMemo is to memoize a calculation result between a function's calls and between renders
useCallback is to memoize a callback itself (referential equality) between renders

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: stackoverflow.com

Tags: javascript react-usememo usecallback

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Contributed on May 14 2021

Akats

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usecallback vs usememo

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useCallback and useMemo -
  
  both for optimization in react.
  
useCallback - caches a callback (function) to keep its previous reference.
            - referential equality between renders
            - if function is passed as props, will not re-render the component if wrapped with react.memo
            - since function reference did not change


useMemo     - similar to useCallback but this hook caches a value or result
		    - does no recompute if dependency array did not change resulting to optimized performance

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on May 05 2022

Runtime Terror

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usememo vs usecallback

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---- useMemo vs useCallback -----------------------------------------

useMemo: memoize A CALCULATION RESULT between a function's calls
and between renders.

useCallback: memoize A CALLBACK ITSELF (referential equality) 
between renders.

---------------------------------------------------------------------

Popularity 10/10 Helpfulness 2/10 Language html

Source: Grepper

Tags: html

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Contributed on Jan 05 2022

KostasX

0 Answers Avg Quality 2/10

difference between useCallback and useMemo

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  both for optimization in react.
 
useCallback - It caches the provided function instance 0.
			 - when need to cache a function useCallback
useMemo -It invokes provided function and caches it's result.
        - wen you need to cache the result of an invoked function useMemo

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: between

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Contributed on Dec 04 2022

Abhishek

0 Answers Avg Quality 2/10

difference between usecallback and usememo

Comment

useCallback and useMemo -
  
  both for optimization in react.
  
useCallback - caches a callback (function) to keep its previous reference.
            - referential equality between renders
            - if function is passed as props, will not re-render the component if wrapped with react.memo
            - since function reference did not change


useMemo     - similar to useCallback but this hook caches a value or result
		    - does no recompute if dependency array did not change resulting to optimized performance

Popularity 10/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: between

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Contributed on Aug 20 2022

Surbhi Kumari

0 Answers Avg Quality 2/10

react usememo vs usecallback

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