Swift RAC Reactive Cocoa Array Example

racViewController

class RootViewController: UIViewController {
  
    var numberArray : [Int] = []

    // this is intentionally blank
    override func viewDidLoad() {
        

        var signal = RACObserve2(self.numberArray, "property")
        signal.subscribeNext { (object) -> Void in
            if let tuple = object as? RACTuple {
                //var wholeArray = tuple.first as? NSArray
                //var changeDictionary = tuple.second as? NSDictionary
                NSLog("here")
            }
        }
    }
}