Function maple_core::reactive::create_selector

pub fn create_selector<F, Out>(derived: F) -> StateHandle<Out> where
    F: Fn() -> Out + 'static,
    Out: Clone + PartialEq + Debug + 'static, 

Creates a memoized value from some signals. Also know as “derived stores”. Unlike create_memo, this function will not notify dependents of a change if the output is the same. That is why the output of the function must implement PartialEq.