Struct TrackedScope 

pub struct TrackedScope { /* private fields */ }

A reactive observer for a single frame-rebuild pass.

Run the rebuild under track; afterwards any change to a signal read during that pass sets the dirty flag (is_dirty) and fires the process-wide frame waker once (coalesced). Re-running track re-records dependencies from scratch, so a signal read in one pass but not the next stops dirtying the scope.

Cheap to clone-around by holding the inner Arc; construct one per long-lived rebuild target (e.g. one per app root / retained component).

Implementations

impl TrackedScope

pub fn new() -> Self

Creates an empty scope with no tracked sources and a clean dirty flag.

pub fn track<R>(&self, f: impl FnOnce() -> R) -> R

Runs f with this scope installed as the reactive observer.

Dependency tracking is re-recorded from scratch each call: previously recorded sources are unsubscribed first, the dirty flag is cleared, then every signal read inside f re-subscribes this scope. Returns whatever f returns.

pub fn is_dirty(&self) -> bool

Whether any tracked source has notified since the last track.

Trait Implementations

impl Default for TrackedScope

fn default() -> Self

Returns the “default value” for a type.