EffectImpl class

Implementation of Effect that automatically runs when its dependencies change.

This is the concrete implementation of the Effect interface. Effects are side-effect functions that run in response to reactive state changes. They automatically track their dependencies and re-run when any dependency changes.

See Effect for the public interface and usage examples.

Example:

final count = Signal(0);

// Effect runs immediately and whenever count changes
final effect = Effect(() {
  print('Count is: ${count.value}');
});

count.value = 1; // Prints: "Count is: 1"
count.value = 2; // Prints: "Count is: 2"

effect.dispose(); // Stop the effect