Map的相关操作：

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 包含各种类型 tuple._1                    //sparkprintln(tuple._1)println(tuple._3)