Struct EventStream 

pub struct EventStream<T: 'static> { /* private fields */ }

A simple multi-cast event stream.

Listeners are called synchronously when emit() is invoked. Clone-safe — cloning shares the underlying listener list.

Implementations

impl<T: 'static> EventStream<T>

pub fn new() -> Self

pub fn on<F>(&self, listener: F) -> EventSubscription

where F: Fn(&T) + Send + Sync + 'static,

Subscribe to events. Returns an EventSubscription that unsubscribes on drop.

pub fn emit(&self, event: &T)

Emit an event to all active listeners.

pub fn listener_count(&self) -> usize

Returns the number of active listeners.

Trait Implementations

impl<T: 'static> Clone for EventStream<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: 'static> Default for EventStream<T>

fn default() -> Self

Returns the “default value” for a type.