package spark.demo
object Demo {
def main(args: Array[String]) {
val m: Map[Int, String] = Map(3 -> "Python", 1 -> "Java", 2 -> "Scala", 6 -> "SQL")
/**
* key=3, value=Python
* key=1, value=Java
* key=2, value=Scala
* key=6, value=SQL
*/
val result = m.foreach(x => println("key=" + x._1 + ", value=" + x._2))
}
}