RxSwift has a much cleaner way for doing this – a Binder. In the introduction post what RxSwift is I wrote that it is one of the pros of RxSwift… any time it receives a new value it runs the code label.text = text. For example, imagine you have PublishSubject of a Bool which produces true and false. One of the definitions is: ReactiveX is a library for composing asynchronous and event-based programs by using observable sequences. RxDataSources includes UITableView & UICollectionView related reactive libraries. In your case. RxSwift Combine Notes; amb() asObservable() eraseToAnyPublisher() asObserver() bind(to:) assign(to) Assign uses a KeyPath which is really nice and useful. Note: In RxSwift 4 UIBindingObserver has been changed to Binder. This post will assume some knowledge of the workings of RxSwift and is specifically about binding rather than all the building blocks. UITextField. You may instead do something like this. RxSwift needs a Binder / ObserverType to bind to. ‘bind(to:)’ in RxSwift is a vastly used operator to link the result of a value emitted from one Observable to another. E.g. We’ll also add all … I already succeeded in doing exactly what I am looking for but using global attributes for storing the current query and the current page. I think that a good practice is to place into extension an Observable or an Observer, or both. You might be familiar with them through helpers such as myLabel.rx.text to which you can bind your Observable s. After using that for a while, I wondered how to expose similar properties for custom views and found the answer . RxSwift adds the basic library including Observable, BehaviorRelay, PublishSubject etc. // RxSwift 5 extension Reactive where Base: MyView { var title: Binder { Binder(base) { base, title in base.title = title } } RxSwift6ではReactiveCompatibleなオブジェクト(.rxの使えるオブジェクト)ではこの記述は不要になります。 変更のコミットはこちら. My current attempt is to set up an observable for the text and a observable for the current page and to combine them in order to perform the request with both parameters. RxSwift. The last task is to return observable sequences for each of the two ... but not exposed outside of the RxSwift library. RxSwiftExt helps with binding the observables straight to the UI-Components. It means whenever we bind an Observable to a binder, the binder reacts to the Observable value. The component that will allow us to respond to changes reactively and write declarative code. You are trying to bind the stream from inputTextField.rx.controlEvent(.editingDidEnd) which is Observable to loginButton.rx.tap which is an Observable, and not an Observer.In english, button.rx.tap is meant to be observed, and not meant to observe. 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