reduce method

@override St? reduce()

The reduce method is the action reducer. It may read the action state, the store state, and then return a new state (or null if no state change is necessary).

It may be synchronous (returning AppState or null) or async (returning Future<AppState> or Future<null>).

The StoreConnectors may rebuild only if the reduce method returns a state which is both not null and different from the previous one (comparing by identical, not equals).

Implementation

@override
St? reduce() {
  if (delay == null)
    return reducer(state, operation, flag, ref);
  else {
    Future.delayed(delay!, () {
      reducer(state, operation, flag, ref);
    });
    return null;
  }
}