ã¾ã ãloopã¨ãreactã¨ãããã®è¾ºããåãããªã¼ã£ã¦æãã§ä¸éãã³ãã ãã©ã å scalaã®ã³ã¼ã(http://www.scala-lang.org/node/54ãã転è¼) abstract class PingMessage case object Start extends PingMessage case object SendPing extends PingMessage case object Pong extends PingMessage abstract class PongMessage case object Ping extends PongMessage case object Stop extends PongMessage object pingpong extends Application { val pong = new Pong val pi
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