It's not even limited to Futures - in this case, how do I marshall any content in this situation when the type is parameterized?
On Tuesday, June 13, 2017 at 12:50:40 PM UTC-7, Justin du coeur wrote: > > Good luck -- I've been doing a lot with tagless final in my Akka Sharded / > Persistent code, and have the beginnings of a library for that > <https://github.com/jducoeur/Querki/tree/master/querki/scalajvm/app/funcakka>, > > but I've found that *completely* doing away with the Futures is pretty > challenging. I've gotten it most of the way there, but I still have to > cheat occasionally... > > On Tue, Jun 13, 2017 at 12:44 PM, Jeff <jknigh...@gmail.com <javascript:>> > wrote: > >> I am trying to learn tagless final style to remove concrete monads (ie >> futures) from my code. I have come up with the following strawman >> application (using cats) >> >> class RestaurantRoutes[F[_]: Monad](algebra: RestaurantAlgebra[F]) { >> import algebra._ >> >> def route: Route = >> path("api" / "v4.0" / "restaurant" / IntNumber) { rid => >> get { >> complete(getRestaurantById(rid).map(_.toString).value) >> } >> } >> } >> >> object RestaurantRoutes { >> def apply()(implicit ec: ExecutionContext): >> RestaurantRoutes[FutureOfOption] = { >> import cats.instances.future._ >> >> new RestaurantRoutes(new RestaurantFutureInterpreter()) >> } >> >> } >> >> the final type of >> >> getRestaurantById(rid).map(_.toString).value >> >> is a >> >> Future[Option[String]] >> >> However, I can't seem to figure out to get that marshalled. A marshaller >> exists for all those types, and had I had concrete types intstead of F[_], >> it would have worked. What is the best way to handle this to prevent >> implementation details from leaking in? >> >> Thanks >> Jeff >> >> -- >> >>>>>>>>>> Read the docs: http://akka.io/docs/ >> >>>>>>>>>> Check the FAQ: >> http://doc.akka.io/docs/akka/current/additional/faq.html >> >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user >> --- >> You received this message because you are subscribed to the Google Groups >> "Akka User List" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to akka-user+...@googlegroups.com <javascript:>. >> To post to this group, send email to akka...@googlegroups.com >> <javascript:>. >> Visit this group at https://groups.google.com/group/akka-user. >> For more options, visit https://groups.google.com/d/optout. >> > > -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. To unsubscribe from this group and stop receiving emails from it, send an email to akka-user+unsubscr...@googlegroups.com. To post to this group, send email to akka-user@googlegroups.com. Visit this group at https://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.