Created
April 28, 2018 19:36
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| def sequence[A, B](l: Iterable[A])(fn: A ⇒ Future[B])(implicit ec: ExecutionContext): Future[List[B]] = | |
| l.foldLeft(Future(List.empty[B])) { | |
| (previousFuture, next) ⇒ | |
| for { | |
| previousResults ← previousFuture | |
| next ← fn(next) | |
| } yield previousResults :+ next |
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