const memoizedValue = useMemo(() => { 
        console.log("hello world");
        return computeExpensiveValue(dependency1, dependency2) 
      }, [dependency1, dependency2]); 
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      In the above code, memoizedValue references a function that will be memoized. Memoization is a technique that allows the computer to remember a piece of information so that it can be reused again in the future. The function computeExpensiveValue will be called once for each dependency that is passed in. Dependency1 and dependency2 will be passed in as arguments to the function. The return value of the function will be stored in memoizedValue.

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