初学swift笔记 流程控制（五）

 import Foundation

 for var i=; i<=; i++ {
     println(i)
     }

 let str1="adl;fjasdfl;ouewrouqwperuadf"
 for c in str1 {
     switch c {
         case "a","f","o":
             println(c)

         default:
             var t=""

     }
 }
 var x=
 switch x {
 case ... :
     println("个位数")
 case ...:
     println("十位数")
 case ...:
     println("百位数")
 case ...:
     println("千位数")
 default:
     var t=""
 }

 var point = (,)
 switch point{
 case (,):
     println("0,0")
 case (...,...):
     println("x:\(point.0) - y:\(point.1)")
 case (_,):
     println("xxxxx")
 default:
     var t=""
 }
 //值绑定
 switch point{
 case (let x,):
     println(x)
 case let(x,y):
     println("两个值都绑定")
 case let(x,y) where x == y:
     println("先判断值是否相等，然后再做绑定")
 default:
     var t=""
 }