斯卡拉 – 误会阿卡变得/不成熟

以下代码：

class HotSwapActor extends Actor {
  import context._
  def angry: PartialFunction[Any,Unit] = {
    case "foo" => sender ! "I am already angry!"
    case "bar" => become(happy)
  }

  def happy: PartialFunction[Any,Unit] = {
    case "bar" => sender ! "I am already happy :-)"; unbecome
    case "foo" => become(angry)
  }

  def receive = {
    case "foo" => become(angry)
    case "bar" => become(happy)
  }
}

class OtherActor extends Actor {
  val system = ActorSystem()
  val actor = system.actorOf(Props[HotSwapActor])
  def receive = {
    case "start" =>
      actor ! "foo"
      actor ! "bar"
      actor ! "bar"
      actor ! "foo"
    case a @ _ => println(a)
  }
}

object HotSwapMain extends App {
  val system = ActorSystem()
  val actor = system.actorOf(Props[OtherActor])
  actor ! "start"
}

有输出：

I am already happy

版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 [e-mail] 举报，一经查实，本站将立刻删除。

• 上一篇：Scala：如何将元组元素转换为列表下一篇：Scala视图应用程序难题