Function create_memo 

pub fn create_memo<T>(
    fun: impl Fn(Option<&T>) -> T + Send + Sync + 'static,
) -> Memo<T>
where
    T: PartialEq + Send + Sync + 'static,

👎Deprecated: This function is being removed to conform to Rust idioms. Please use Memo::new() instead.

Creates a new memoized, computed reactive value.