なんとまあググらビリティのひくい話題。 ! means “fire-and-forget”, e.g. send a message asynchronously and return immediately. Also known as tell. ? sends a message asynchronously and returns a Future representing a possible reply. Also know…

Akka関係で、たとえばちょいちょい見かけるこういうの。 import akka.actor.Actor class MessagePrintActor extends Actor { def receive = { case msg: String => { val message = self.path + ": Received String " + msg println(message) } } } なにをし…