var map1=Map("abc"->5,"eee"->6)

 var x=map1.get("abc")

 x match {

  case Some(x) => println("Some用来判断值存在"+x)

  case None => println("None用来表示值不存在")

 }

class A

case class A1(name:String,age:Int) extends A

case class A2(name:String,address:String) extends A

def  classMatch(c:A){

 c match {

  case A1(name,age) => println("类型是A1")

  case A2(name,address) => println("类型是A2")

  case _ => println("类型未知")

 }

}

def  listMatch(list:Any)={

 list match {

  case e1::e2::Nil => println("list仅有2个元素:"+e1+e2)

  case "abc"::"678"::"mmm"::Nil => println("list仅仅包含3个固定元素")

  case 0::tail => println("list以0开头包含"+(list.asInstanceOf[List[Int]]).length+"个元素")

  case 0::Nil => println("这个list仅仅包含0")

  case _ => println("没有匹配")

 }

}

def  arrayMatch(arr:Any)={

 arr match {

  case Array("abc") => println("only one abc")

  case Array("abc",1) => println("两个元素：abc和1")

  case Array(a,b) => println("两个动态元素:"+a+"-"+b)

  case Array(0,_*) => println("这个array以0开头元素个数不计:"+arr)

  case _ => println("没有匹配")

 }

}

//传入的参数，但判断类型时实际使用的是isInstanceOf[xxx]

def getNum(item:Any)={

 item match{

     case x:String => print("String")

     case i:Int => print("Int")

     case c:Char => print("Char")

     case _=>0//这个是完全没有匹配上的情况

 }

}

def testMatch(i:Int,s:String="default"):Unit={

 i match {

  case 1 => print("数字："+1)

  case 2 => print("数字："+2)

  case 3 => print("数字："+3)

  case 5 if(s equals "mz") => print("数字："+3+"mz")//匹配后仍可添加判断

  case tmp1 => print("tmp1的赋值数字："+tmp1)//会将i赋值给tmp1变量

  case _ => print("其它喽")

 }

}