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 ofChangeNotifier
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