Stream Processing with Akka Streams scenarios with ClassCastException in Scala 2.13.8
Hey everyone, I'm running into an issue that's driving me crazy. Does anyone know how to I'm trying to process a stream of data using Akka Streams in Scala 2.13.8, but I'm working with a `ClassCastException` when I attempt to materialize the stream... The behavior occurs when I try to convert a `Source[Int, NotUsed]` into `Source[String, NotUsed>` using a `map` function. Here's the code snippet: ```scala import akka.NotUsed import akka.stream.scaladsl.{Source, Sink, Flow} val intSource: Source[Int, NotUsed] = Source(1 to 10) val stringFlow: Flow[Int, String, NotUsed] = Flow[Int].map(_.toString) val stringSource = intSource.via(stringFlow) stringSource.runWith(Sink.foreach(println)) ``` However, when I run this code, I receive the following behavior: ``` Exception in thread "main" java.lang.ClassCastException: java.lang.Integer want to be cast to java.lang.String ``` I've checked the types and they seem correct, but I'm not sure why I'm getting this behavior. I've also tried using `map(_.toString: String)` to be explicit about the type, but it didn't change the outcome. Is there something I'm missing in how Akka Streams handles type conversions in flows? Any insights would be greatly appreciated! Any advice would be much appreciated. I'm working on a web app that needs to handle this. Thanks, I really appreciate it! My development environment is Debian.