xcode6 - Swift Generics Console Output -

after enable class inside playground losing console output written above class. wrong ? , weirdly showing error 'expected pattern' @ switch statement sometime , later error goes away

class cart<t> {     var customername: string     var customeremail: string     var items: [t]     var itemcount: int {         return items.count     }     var promocode: string? = nil     init(customername: string, customeremail: string){         self.customername = customername         self.customeremail = customeremail         items = [t]()     }      func add (item: t) -> () {         items.append(item)     }      func clear () -> () {         items.removeall(keepcapacity: false)     }      func remove (position: int) -> () {         items.removeatindex(position - 1)     }      func getpromocodedisplay () -> (string) {         if let x = promocode {             return "your promo code \(x)"         } else {             return "you not have promo code"         }     }      func getcartstatus () -> (string) {         switch itemcount {         case : 0         return "you have no items in cart."         case : 1...3         return "you have \(itemcount) items in cart."         default :             return "you awesome customer!!"         }     } } 

you have colon (:) in wrong place in case statements.

func getcartstatus () -> (string) {     switch itemcount {     case 0 :     return "you have no items in cart."     case 1...3 :     return "you have \(itemcount) items in cart."     default :         return "you awesome customer!!"     } }