ChangeNotifierProvider is the widget that provides an instance of a ChangeNotifier to its descendants. It comes from the provider package. Simply wrap any widget with ChangeNotifierProvider widget (As everything is a widget in flutter!) whose descendants would need access to ChangeNotifierProvider.8 Eki 2019
Read moreWhat is Notifier Flutter?
A Notifier is an object that can maintain a set of listeners (and notify them whenever it gets called).
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