大数据Spark “蘑菇云”行动前传第19课：Scala的包、继承覆写及Spark源码鉴赏 1 Spark源码中的包和继承的源代码鉴赏 2 Scala的包、继承编程操作实战
package com.dt.spark.scala.bascis class Person { val counter =3 val counterArray =new Array[Int](counter) }
class Sporter extends Person { override val counter =5 final override def equals(other:Any){ } } class Programmer(val name:String,val salary : Double){ final override def e
