useCallback - In 3 minutes [ and why its different from useMemo ]

#reacthooks #react #javascript
Stay tuned for the rest of the React Hooks Videos

[jasonlough]

This was better than most other explanations. A big confusion I see is when people think it prevents a rerender. It does not. It merely keeps a functions referential equality the same between renders, unless a dependency changes. In your example, for ex, the child component still rerenders when you hit the other button.

[adrianhervasmartinez]

Thanks for the explanation, very clear!

[Strat]

my nex question is, when would you want to pass a function as a prop. Can you not simply code in such a way to prevent that? Beginner question.

[sc]

too fast. hv no idea what is going on but just flashing of cursor and highlighting.