Scala用Future转换Seq [英] Scala transforming a Seq with Future

问题描述

我有一个像这样的元组Seq:

I have a Seq of a tuple that looks like this:

Seq[(Future[Iterable[Type1]], Future[Iterator[Type2]])]

我想将其转换为以下内容:

I want to transform this into the following:

Future[Seq([Iterable[Type1], [Iterable[Type2])]

这有可能吗?

推荐答案

这应该可以解决问题

val a: Seq[(Future[Iterable[Type1]], Future[Iterable[Type2]])] = ...

val b: Future[Seq[(Iterable[Type1], Iterable[Type2])]] = Future.sequence(a.map{
  case (l, r) => l.flatMap(vl => r.map(vr => (vl, vr)))
})

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