lukas-mi
/ list-of-futures-to-future-list.scala
Last active
March 22, 2018 13:42
Convert list of futures to future of list of successes and future of list of failures (List[Future[T]] to (Future[List[T]], Future[List[Throwable]]))
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| import scala.concurrent.{ExecutionContext, Future} | |
| import scala.util.{Failure, Success, Try} | |
| object FutureHelper { | |
| def partition[T](futures: List[Future[T]])(implicit executor: ExecutionContext): (Future[List[T]], Future[List[Throwable]]) = { | |
| val futuresOfTry: List[Future[Try[T]]] = futures.map(_.transform(Success(_))) | |
| val successes = Future.sequence(futuresOfTry) | |
| .map(_.collect { case Success(x) => x }) | |
| val failures = Future.sequence(futuresOfTry) |