Struct ReactiveRuntime 

pub struct ReactiveRuntime { /* private fields */ }

A shared reactive graph that owns Signals and Computeds.

The runtime is Clone (and Send + Sync) because it is backed by Arc<RwLock<_>>. All handles (Signal, Computed) clone the same Arc.

Implementations

impl ReactiveRuntime

pub fn new() -> Self

Create a new, empty reactive runtime.

pub fn signal<T: Send + Sync + Clone + 'static>(&self, initial: T) -> Signal<T>

Create a new Signal holding initial.

The returned handle is lightweight; clone it freely.

pub fn computed<T: Send + Sync + Clone + 'static>( &self, f: impl Fn() -> T + Send + Sync + 'static, ) -> Result<Computed<T>, ReactiveError>

Create a new Computed whose value is derived by calling f.

The thunk f is called lazily on the first get() and whenever the cached value is stale. Dependency edges are registered automatically when f calls .get() on signals or other computeds.

Returns Err(ReactiveError::DependencyCycle) if a cycle is detected on the first evaluation (not possible via the safe public API).

Trait Implementations

impl Clone for ReactiveRuntime

fn clone(&self) -> ReactiveRuntime

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for ReactiveRuntime

fn default() -> Self

Returns the “default value” for a type.