1.控制转移使用:fallthrough,break,continue
2.如果case中声明了变量不能使用fallthrough
3.break用在switch中是跳出当前switch
4.countinue是跳出当前循环执行下一轮循环
5.如果是元音字母跳过:
Let str = "floccinaucinihilipilification"
var num = 0
for s in str
{
switch c
{
case "a","e","i","0","u":
countinue
default:
num++;
}
}
5.初始化一个空二维数组:var brand = Array <Array<Int>>()