Akka来源地图：＆＃34; ...不符合预期类型T _＆＃34;

Question

我有以下代码：

  override def factors: Source[MarketFactors, NotUsed] = {
    Source(Stream.continually(generator)).map(random => {
      val correlated = currentFactors.keys zip random.nextVector()

      val generatedPrice: Map[Equity, Double] = correlated.toSeq.map({
        case (equity, randomValue) =>
          (equity, currentFactors(equity).price + randomValue * currentFactors(equity).volatility)
      })(scala.collection.breakOut)

      GeneratedMarketFactors(generatedPrice)
    })
 }

它应该从随机生成器获取值并创建新价格。 给map的函数的类型为CorrelatedRandomVectorGenerator => MarketFactors。 GeneratedMarketFactors被声明为内部案例类并扩展MarketFactors。

但是，我收到错误Expression of type FactorsGenerator.GeneratedMarketFactors doesn't conform to expected type T_。我做错了什么？

我对Scala和Akka流之间的混合感到不满意，是Stream.continually(generator)的替换吗？