Value Members

1.  object Async

   Async blocks provide a direct means to work with scala.concurrent.Future.

   Async blocks provide a direct means to work with scala.concurrent.Future.

   For example, to use an API that fetches a web page to fetch two pages and add their lengths:

   import ExecutionContext.Implicits.global
   import scala.async.Async.{async, await}
   
   def fetchURL(url: URL): Future[String] = ...
   
   val sumLengths: Future[Int] = async {
     val body1 = fetchURL("http://scala-lang.org")
     val body2 = fetchURL("http://docs.scala-lang.org")
     await(body1).length + await(body2).length
   }

   Note that in the following program, the second fetch does *not* start until after the first. If you need to start tasks in parallel, you must do so before await-ing a result.

   val sumLengths: Future[Int] = async {
     await(fetchURL("http://scala-lang.org")).length + await(fetchURL("http://docs.scala-lang.org")).length
   }