Simple action creator in Swift

action_creator.swift

// Action creator definition
func fetchAppsFromStore(state: State, store: Store<State>) -> Action? {
    
    let request = AppStoreRequests.apps(showDevelopment: state.settingsState.isDevelopmentMode)
    let task = JsonRequestTask<[AppId]>(dispatcher: dispatcher)

    // Async task call
    task.perform(request)
        .subscribe(onNext: { result in

            // Asycn result dispatched inside an action                 
            store.dispatch(SetStoreApps(apps: .finished(apps)))
        }, onError: { error in
            
            // Asycn error dispatched inside an action           
            store.dispatch(SetStoreApps(apps: .failed(reason: error)))
        })
        .disposed(by: disposer)
    
    // Return an action that will be dispatched inmediatelly
    return SetStoreApps(apps: .loading)
}

// Action creator call
store.dispatch(fetchAppsFromStore)