ObserverN constructor

const ObserverN({
  1. Key? key,
  2. required List<Reactive> listenable,
  3. required Widget listener(),
})

Constructs an Observer2 widget.

The listenable parameter is the first reactive variable to listen to.

The listener parameter is a callback function that defines the widget to rebuild whenever either of the reactive variables changes.

Implementation

const ObserverN({
  Key? key,
  required this.listenable,
  required this.listener,
}) : super(key: key);