RxMemoryLeak.swift

class ViewController: UIViewController {
  
  @IBOutlet weak var searchBar: UISearchBar!
  @IBOutlet weak var label: UILabel!
  
  override func viewDidLoad() {
    searchBar.rx.text.throttle(0.2, scheduler: MainScheduler.instance).subscribe(onNext: {(searchText) in
      self.label.text = "new value: \(searchText)"
    }).addDisposableTo(bag)
  }
}