Function number_input 

pub fn number_input<'a, T, Message, Theme, Renderer, F>(
    value: &T,
    bounds: impl RangeBounds<T>,
    on_change: F,
) -> NumberInput<'a, T, Message, Theme, Renderer>
where
    Message: Clone + 'a,
    Renderer: Renderer<Font = Font>,
    Theme: ExtendedCatalog,
    F: 'static + Fn(T) -> Message + Copy,
    T: 'static + Num + NumAssignOps + PartialOrd + Display + FromStr + Copy + Bounded,

Shortcut helper to create a NumberInput Widget.