Function create_signal 

pub fn create_signal<T>(
    value: T,
) -> (ReadSignal<T, UnsyncStorage>, WriteSignal<T, UnsyncStorage>)
where
    T: Any + 'static,

👎Deprecated since 0.2.0: Use RwSignal::new for sync signals or RwSignal::new_local for local ones

Creates a new setter and getter Signal.

Accessing the signal value in an Effect will make the Effect subscribe to the value change of the Signal. And whenever the signal value changes, it will trigger an effect run.