In a React functional component, for computationally intensive operations, consider using useMemo and a hook to perform the calculations, only redoing the calculation when specific data dependencies change.
A function makeEmogene is defined within the component, taking a string parameter emogene and returning a piece of UI based on it.
makeEmogene defines weather emojis and randomWeather selects a random weather emoji.
Another component function, emergeEView, utilizes makeEmogene to display the weather emoji and an emerge string, rerendering only when emerge state changes.
useMemo is imported from React and used to ensure that makeEmogene computation only runs when the emerge dependency changes, otherwise, the memoized value is used.
Testing confirms that when emerge changes, such as by clicking an emoji button, the displayed weather emoji randomly updates, demonstrating the execution and result of makeEmogene.
