我是 Scala 和 Futures 的新手。我的场景如下 -

val futureTotalCount : Future[Int]
val futureProcessedCount : Future[Int]

//I need to find the difference of above two futures to get unProcessedCount, something like-
val futureUnProcessedCount : Future[Int] = (futureTotalCount - futureProcessedCount)

在 Scala 中可能有这样的事情吗？

回答

futureTotalCount zip futureProcessedCount map { case(a,b) => a -  b }