driver-example.swift

let dataObservable = Observable<String>.create { observer -> Disposable in
  print("Feching data...")
  DispatchQueue.global(qos: .background).asyncAfter(deadline: .now() + 2, execute: {
    observer.onNext("Some data from the internet")
  })
  return Disposables.create()
}

let dataDriver = dataObservable.asDriver(onErrorJustReturn: "")

var bag = DisposeBag()

dataDriver
  .drive(textField.rx.text)
  .disposed(by: bag)

dataDriver
  .drive(otherTextField.rx.text)
  .disposed(by: bag)