change_notifier

Description:

change notifier

Support for detecting and being notified when an object is mutated.
There are two kinds of change notifiers:

AsyncChangeNotifier: be notified of a continuous stream of events over time.
ChangeNotifier: be notified at the moment of a change. This is a direct extraction of ChangeNotifier in Flutter Core.

Some suggested uses for this library:

Observe objects for changes, and log when a change occurs
Optimize for observable collections in your own APIs and libraries instead of diffing
Implement simple data-binding by listening to streams

Usage #
There are two general ways to detect changes:

Listen to ChangeNotifier.changes and be notified when an object changes
Use Differ.diff to determine changes between two objects