Sync actions

If you want to modify the state synchronously, simply declare the reducer to return AppState? and return a new state.

For example, let's start with a simple action to increment a counter by some value:

class IncrementAction extends ReduxAction<AppState> {
  final int amount;
  IncrementAction({this.amount});
  
  AppState? reduce() {
    return state.copy(counter: state.counter + amount));
  }
}

Note the reduce() method above has direct access to both the counter state (state.counter) and to the action state (the field amount).

This action can be dispatched elsewhere like this:

store.dispatch(IncrementAction(amount: 3));

Try running the: Increment Example.

---

Next, let's learn more about asynchronous actions, which are necessary when you need to do something that takes time, like reading from a database or making a network request.