RxSwift中訪問項目

Question

我正在使用RxSwift，我試圖訪問我的訂閱功能內的單個項目。但是.subscribe給了我ShoppingList的數組，我想要一個單獨的ShoppingList項目。

private var disposeBag = DisposeBag() 

var shoppingLists :Variable<[ShoppingList]> = Variable([]) 

override func viewDidLoad() { 
    super.viewDidLoad() 

    // add to the shoppinglist 
    let shoppingList = ShoppingList(title: "Walmart") 
    self.shoppingLists.value.append(shoppingList) 


    shoppingLists.asObservable() 
     .subscribe { shoppingLists in 

      // how to access the item inside the shoppingList // Walmart 

      print("subscribe") 
      print(shoppingLists) 
     } 
     .addDisposableTo(disposeBag) 


} 

Answer 1

shoppingLists.asObservable() 
    .flatMap { shoppingList in 
     Observable.from(shoppingList) // <- magic here 
    } 
    .subscribe(onNext: { item in 
     print("subscribe") 
     print(item) 
    }) 
    .addDisposableTo(disposeBag)