Swift 2 筆記 do-while 現在變成 repeat-while var i = 0 repeat { i++ print(i) } while i < 10 for-in where 子句 let numbers = [20, 18, 39, 49, 68, 230, 499, 238, 239, 723, 332] for number in numbers where number > 100 { print(number) }