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Tvaroh/ExecuteUnsafe.scala

Created September 25, 2018 16:21
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  1. Tvaroh created this gist Sep 25, 2018.
    21 changes: 21 additions & 0 deletions ExecuteUnsafe.scala
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    Original file line number Diff line number Diff line change
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    import scala.concurrent.Future

    /** Typeclass for interoperating with legacy code which uses Scala futures. */
    trait ExecuteUnsafe[F[_]] {

    def unsafeToFuture[T](mt: F[T]): Future[T]

    }

    object ExecuteUnsafe {

    def apply[F[_]: ExecuteUnsafe]: ExecuteUnsafe[F] =
    implicitly[ExecuteUnsafe[F]]

    implicit val future: ExecuteUnsafe[Future] = FutureExecuteUnsafe

    private object FutureExecuteUnsafe extends ExecuteUnsafe[Future] {
    override def unsafeToFuture[T](future: Future[T]): Future[T] = future
    }

    }