gistfile1.txt

itemsRef.observe(DataEventType.value) { (snap:DataSnapshot!) -> Void
                in
                let getHistory = JSON(snap.value!)
                
                //for (key,_):(String, JSON) in self.getHistory {
                //    self.keyArr.addObject(key)
                //}
                //self.myarr =  self.keyArr.sort({Double($0  as! String)! > Double($1  as! String)!})
                
              print(getHistory)
                
}