Trait SignalUpdate 

pub trait SignalUpdate<T> {
    // Required methods
    fn id(&self) -> Id;
    fn try_update<O>(&self, f: impl FnOnce(&mut T) -> O) -> Option<O>
       where T: 'static;

    // Provided methods
    fn set(&self, new_value: T)
       where T: 'static { ... }
    fn set_if_changed(&self, new_value: T)
       where T: PartialEq + 'static { ... }
    fn update(&self, f: impl FnOnce(&mut T))
       where T: 'static { ... }
}

Required Methods

fn id(&self) -> Id

get the Signal Id

fn try_update<O>(&self, f: impl FnOnce(&mut T) -> O) -> Option<O>

where T: 'static,

Update the stored value with the given function, triggers effect run, and returns the value returned by the function

Provided Methods

fn set(&self, new_value: T)

where T: 'static,

Sets the new_value to the Signal and triggers effect run

fn set_if_changed(&self, new_value: T)

where T: PartialEq + 'static,

Sets the new_value to the Signal and triggers effect run only if the value has changed

fn update(&self, f: impl FnOnce(&mut T))

where T: 'static,

Update the stored value with the given function and triggers effect run

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<T> SignalUpdate<T> for Signal<T>

impl<T> SignalUpdate<T> for SyncSignal<T>

where T: Send + Sync,

impl<T> SignalUpdate<T> for SyncWriteSignal<T>

where T: Send + Sync,

impl<T> SignalUpdate<T> for WriteSignal<T>

impl<T, O, GF, UF> SignalUpdate<O> for SyncDerivedSignal<T, O, GF, UF>

where T: Send + Sync + 'static, O: Send + Sync + 'static, GF: Fn(&T) -> O + Copy + Send + Sync, UF: Fn(&O) -> T + Copy + Send + Sync,

impl<T, O, GF, UF> SignalUpdate<O> for DerivedSignal<T, O, GF, UF>

where T: 'static, O: 'static, GF: Fn(&T) -> O + Copy + 'static, UF: Fn(&O) -> T + Copy + 'static,