Scala基础——Map(映射)

val map = Map("name" -> "xiaoming","age" ->20)
println(map("name"))    

  var m :Map[String,Int]= Map()
    m += ("one"->1)

 if(map.contains("age")){
       println(map("age"))
     }

     val map = Map("name" -> "xiaoming","age" ->20)
     map("gender") = "cumputer"
     println(map("gender"))

 val map = Map("name" -> "xiaoming","age" ->20)
     map("gender") = "cumputer"
      for((k,v) <- map){
        printf("%s->%s\n",k,v)
      }

 for (k<-map.keys) println(k)
for (v<-map.values) println(v)