Print nothing instead of nil - swift

Question

I created a view that shows the users location on a map and displays the users location in two labels in the view. Its not always there is a subThoroughfare, so "nil" is printed in in the labels. What can I do to just print in nothing instead of "nil" in the label?
Thanks for your help
import UIKit
import CoreLocation
import MapKit
class Kart: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate {
#IBOutlet var myMap: MKMapView!
var locationManager = CLLocationManager()
#IBOutlet var adress: UILabel!
#IBOutlet var adress2: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.requestWhenInUseAuthorization()
locationManager.startUpdatingLocation()
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func locationManager(manager: CLLocationManager!, didFailWithError error: NSError!) {
println("Feil")
}
func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) {
var userLocation:CLLocation = locations[0] as! CLLocation
locationManager.stopUpdatingLocation()
let location = CLLocationCoordinate2D(latitude: userLocation.coordinate.latitude, longitude: userLocation.coordinate.longitude)
let span = MKCoordinateSpanMake(0.01, 0.01)
let region = MKCoordinateRegion(center: location, span: span)
myMap.setRegion(region, animated: true)
CLGeocoder().reverseGeocodeLocation(userLocation, completionHandler: { (placemarks, error) -> Void in
if (error != nil) {
println(error)
} else {
if let p = CLPlacemark(placemark: placemarks?[0] as! CLPlacemark) {
var subThoroughfare:String = ""
if (p.subThoroughfare != nil) {
subThoroughfare = p.subThoroughfare
}
self.adress.text = "\(p.thoroughfare) \(p.subThoroughfare)"
self.adress2.text = " \(p.postalCode) \(p.subLocality)"
}
}
})
}

Answer 1

self.adress.text = "\(p.thoroughfare) \(p.subThoroughfare)"
uses p.subThoroughfare instead of subThoroughfare. Also, you can use the nil coalescing operator for this (??)
var subThoroughfare = p.subThoroughfare ?? ""
will evaluate to p.subThoroughfare if it is not nil, otherwise it will evaluate to ""
so:
var subThoroughfare = p.subThoroughfare ?? ""
self.adress.text = "\(p.thoroughfare) \(subThoroughfare)"
self.adress2.text = " \(p.postalCode) \(p.subLocality)"

Answer 2

Move the line that prints subThoroughfare into your if statement:
if (p.subThoroughfare != nil) {
subThoroughfare = p.subThoroughfare
self.adress.text = "\(p.thoroughfare) \(p.subThoroughfare)"
}
else
self.adress.text = "\(p.thoroughfare)"
Also: It doesn't look like you're using that subThoroughfare variable.