leptos_use::math

Function use_max

Source 
pub fn use_max<C, S, N>(container: S) -> Signal<Option<N>>
where
    S: Into<MaybeSignal<C>>,
    C: 'static,
    for<'a> &'a C: IntoIterator<Item = &'a N>,
    N: PartialOrd + Clone,
Expand description

Reactive max().

Works with any container that implements IntoIterator (Vec, HashSet, …) with any elements that implement PartialOrd and Clone (floats, ints, strings, …).

If the container is empty or only contains non comparable values like NaN, it returns None. Otherwise it returns the Some(<largest value>) in the container.

§Usage

let (values, set_values) = create_signal(vec![1.0, 2.0, 3.0, f32::NAN, 4.0, 5.0]);
let result = use_max::<Vec<f32>, _, _>(values); // Some(5.0)