map

package map

object class25 {
  def main(args: Array[String]): Unit = {
    var map1 = Map(("alice" -> 90), ("bob" -> 80), ("bob" -> 100))

    map1 += ("juddy"->90)

    map1 -="bob"

    val key = "alice"
    val ret = map1.get(key)
    if(ret.isDefined){
      println((s"${key}对于的值是： ${ret.get}"))
    }else{
      println(s"${key}不存在")
    }
    println(ret)
for((a,b)<-map1){
  println(s"${a},${b}")
}

map1.foreach({
  case (key,value) => {
    println(s"${key},${value}")
  }
})

  }
}