样例类Demo

//在Scala中样例类是一中特殊的类，可用于模式匹配。case class是多例的，后面要跟构造参数，

case object是单例的

import scala.util.Random

case class SubmitTask(id: String, name: String)
case class HeartBeat(time: Long)
case object CheckTimeOutTask

object CaseDemo04 extends App{
  val arr = Array(CheckTimeOutTask, HeartBeat(12333), SubmitTask("0001", "task-0001"))

  arr(Random.nextInt(arr.length)) match {
    case SubmitTask(id, name) => {
      println(s"$id, $name")//前面需要加上s, $id直接取id的值
    }
    case HeartBeat(time) => {
      println(time)
    }
    case CheckTimeOutTask => {
      println("check")
    }
  }
}