Scala中的Map和Set

Map和Set中常用的一些方法。

var jetset = Set("one","two")jetset += "three"println(jetset.contains("four"))println(jetset.contains("three"))jetset.foreach(arg => println(arg))print(jetset.size)import scala.collection.mutable.Mapval treasureMap = Map[Int,String]()treasureMap +=(1->"one")treasureMap +=(2->"two")treasureMap +=(3->"three")print(treasureMap(1))