scala Map

Map的相关操做：

val person=Map("spark"->6,"hadoop"->11)
  val persons=scala.collection.mutable.Map("spark"->6,"hadoop"->11)
  persons += ("Filnk"->5)    //添加
  persons -= "Flink"         //删除
 for ((key,value)<-person) println(key+":"+value)
 val person=scala.collection.immutable.SortedMap("spark"->6,"hadoop"->11)        //对Map排序
 val tuple("spark",6,99.9)   //元组 包含各类类型
 tuple._1                    //spark
println(tuple._1)
println(tuple._3)