updateBlocOnChange method

void updateBlocOnChange({ required dynamic change(), required List tracker(), })

Updates the Bloc after calling change if the value returned by tracker changes.

Slightly less efficient than writing the code yourself, but reduces boilerplate.

Note the change has to be a synchronous call. If change returns a future, use updateBlocOnFutureChange instead.

Implementation

void updateBlocOnChange({
  required dynamic Function() change,
  required List<dynamic> Function() tracker,
}) {
  final track = tracker();

  change();

  if (!_equality(track, tracker())) {
    updateBloc();
  }
}