Struct kobold::stateful::Signal

#[repr(transparent)]
pub struct Signal<S> { /* private fields */ }

Implementations

impl<S> Signal<S>

pub fn update<F, O>(&self, mutator: F)where F: FnOnce(&mut S) -> O, O: ShouldRender,

Update the state behind this Signal.

fn example(count: Signal<i32>) {
    // increment count and trigger a render
    count.update(|count| *count += 1);

    // increment count if less than 10, only render on change
    count.update(|count| {
        if *count < 10 {
            *count += 1;
            Then::Render
        } else {
            Then::Stop
        }
    })
}

pub fn update_silent<F>(&self, mutator: F)where F: FnOnce(&mut S),

Same as update, but it never renders updates.

pub fn set(&self, val: S)

Replace the entire state with a new value and trigger an update.

Trait Implementations

impl<S> Clone for Signal<S>

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.