nurbol.dev

nurbol.dev

Memoizing derived state

Managed State: State that you need to explicitly manage
Derived State: State that you can calculate based on other state There is no need to sync the derived state values because they're simply calculated every render.

function MyComponent(props) {
    const [state, setState] = React.useState('')
    
    const derivedValue = calculateDerivedState(args)
    
    const derivedValueFromProps = calculateDerivedStateFromProps(props.value)
    
    const memoizedDerivedValue = useMemo(() => calculateDeriverState(args), [args])
    
    // return JSX
}