 		case let .JSONNumber(n):
 			return n as Float
 		default:
-			return Optional.None
+			return nil
 		}
 	}
 	

		case let .JSONString(n):
			return n
		default:
			return Optional.None
		}
	}


				return (k, B.fromJSON(x)!)
			}))
		default:
			return nil
		}
	}
}
