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EitherT[Future, String, _]
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| import com.github.nscala_time.time.Imports._ | |
| import scala.concurrent._ | |
| import scala.concurrent.ExecutionContext.Implicits.global | |
| import scala.concurrent.duration.Duration | |
| import scalaz._, syntax.either._, std.AllInstances._ | |
| object Main extends App { | |
| type EitherFuture[A] = EitherT[Future, String, A] | |
| def date(): String = DateTimeFormat.forPattern("HH:mm:ss").print(new DateTime) | |
| def efx(): EitherFuture[String] = { | |
| EitherT { | |
| Future { | |
| println("-> x: " ++ date) | |
| Thread.sleep(5000) | |
| println("<- x: " ++ date) | |
| "x".right | |
| //"x-failed".left | |
| } | |
| } | |
| } | |
| def efy(): EitherFuture[String] = { | |
| EitherT { | |
| Future { | |
| println("-> y: " ++ date) | |
| Thread.sleep(3000) | |
| println("<- y: " ++ date) | |
| "y".right | |
| } | |
| } | |
| } | |
| println("start: " ++ date) | |
| val c0 = Future { | |
| println("-> c0: " ++ date) | |
| Thread.sleep(5000) | |
| println("<- c0: " ++ date) | |
| } | |
| val r: EitherFuture[String] = for { | |
| x <- efx | |
| y <- efy | |
| } yield x ++ y | |
| Await.result(r.run, Duration.Inf) match { | |
| case \/-(x) => println("success: " ++ x) | |
| case -\/(e) => println("failure: " ++ e) | |
| } | |
| Await.result(c0, Duration.Inf) | |
| } |
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