IterableSignalMixin
IterableSignalMixin is a mixin for a Signal that adds reactive methods for Iterable.
class MySignal extends Signal<Iterable<int>> with IterableSignalMixin<int, Iterable<int>> { MySignal(super.internalValue);}
void main() { final signal = MySignal([1, 2, 3]);
effect(() { print(signal.length); });}