RxSwift

[onmyway133]

• https://github.com/ReactiveX/RxSwift/blob/master/Documentation/GettingStarted.md
• http://adamborek.com/how-to-handle-errors-in-rxswift/
• What is the correct way to handle errors? ReactiveX/RxSwift#729
• catchError after a flatMap() or map.switchLatest() not being called ReactiveX/RxSwift#304
• http://adamborek.com/thinking-rxswift/
• https://github.com/DTVD/The-introduction-to-RxSwift-you-have-been-missing
• https://gist.github.com/staltz/868e7e9bc2a7b8c1f754
• http://rxmarbles.com/
• https://www.raywenderlich.com/138547/getting-started-with-rxswift-and-rxcocoa
• https://www.raywenderlich.com/158205/rxswift-transforming-operators

[onmyway133]

Handle error

button.rx.tap
      .flatMapLatest({
        return Observable.error(AppError.cancelled)
          .flatMapLatest({
            return Observable.error(AppError.deallocated)
          })
          .catchErrorJustReturn(())
      })
      .flatMapLatest({
        return Observable.error(AppError.unknown).catchErrorJustReturn(())
      })
      .catchError({ error in
        print(error)
        return Observable.just(())
      })
      .map({
        return "hello"
      })
      .asDriver(onErrorRecover: { error in
        print(error)
        return Driver.just("hi")
      })
      .drive(onNext: { value in
        print(value)
      })