Set map location from string

gistfile1.swift

self.geocoder.geocodeAddressString("Haddonfield, NJ",
  completionHandler: {(placemarks, error:NSError!)  in

 if error? {
  println("Error \(error!.localizedDescription)")
  if error!.code == 8 {
   println("not found")
  }
  return
 }
                    
 let pma:Array<CLPlacemark> = placemarks as Array<CLPlacemark>
 var placemark = pma[pma.endIndex - 1]
 // in degrees
 var spanX = 0.5
 var spanY = 0.5
 var span:MKCoordinateSpan = MKCoordinateSpanMake(spanX, spanY)
 var region:MKCoordinateRegion = MKCoordinateRegion(center:placemark.location.coordinate,
  span:span)
 self.mapView.setRegion(region, animated:true)
})