Hello,
I wrote this code:
import akka.actor.ActorSystem
import akka.stream.scaladsl2.BlackholeSink
import akka.stream.scaladsl2.FlowFrom
import akka.stream.scaladsl2.FlowMaterializer
import akka.stream.scaladsl2.ThunkSource
object Main extends App {
implicit val system = ActorSystem()
implicit val flowMaterializer = FlowMaterializer()
FlowFrom[Int]
.withSource(ThunkSource(() => Some(1)))
.map(x => x)
.withSink(BlackholeSink)
.run
}
And then got this error: java.lang.ClassCastException: scala.Some cannot be
cast to java.lang.Integer
What i'm doing wrong? //Akka-stream version - 0.7
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