Struct WatcherManager 

pub struct WatcherManager<T> { /* private fields */ }

Manages a collection of watchers for a specific computation type.

Provides functionality to register, notify, and cancel watchers.

Implementations

impl<T: 'static> WatcherManager<T>

pub fn new() -> Self

Creates a new, empty watcher manager.

pub fn is_empty(&self) -> bool

Checks if the manager has any registered watchers.

pub fn register(&self, watcher: impl Fn(Context<T>) + 'static) -> NonZeroUsize

Registers a new watcher and returns its unique identifier.

pub fn register_as_guard( &self, watcher: impl Fn(Context<T>) + 'static, ) -> WatcherManagerGuard<T>

Registers a watcher and returns a guard that will unregister it when dropped.

pub fn notify(&self, ctx: &Context<T>)

where T: Clone,

Notifies all registered watchers with a preconstructed context.

pub fn cancel(&self, id: NonZeroUsize)

Cancels a previously registered watcher by its identifier.

Trait Implementations

impl<T> Clone for WatcherManager<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: Debug> Debug for WatcherManager<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T> Default for WatcherManager<T>

fn default() -> Self

Returns the “default value” for a type.