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Signals.dart

TrackedSignalMixin

TrackedSignalMixin is a mixin for a Signal that stores the initial and previous value.

class MySignal extends Signal<int> with TrackedSignalMixin<int> {
  MySignal(int value) : super(value);
}


void main() {
  final signal = MySignal(0);


  signal.value = 1;
  print(signal.initialValue); // 0
  print(signal.previousValue); // null


  signal.value = 2;
  print(signal.initialValue); // 0
  print(signal.previousValue); // 1
}