我想知道F#中是否有类似Haskell的where子句的东西。它将允许转换以下代码

let roulleteWheel numberGenerator (scoredPopulation:ScoredPopulation) =
  let targetScore =
    let totalScore = totalPopulationFitness scoredPopulation
    Seq.head (numberGenerator 0.0 totalScore)

  let isMatch (score, accumulatedScore) =
    if (accumulatedScore >= targetScore) then
      Some(score)
    else
      None

  let accumulatedScores =
    let scores = Seq.map (fun (_, score) -> score) scoredPopulation
    Seq.skip 1 (Seq.scan (+) 0.0 scores)

  Seq.pick isMatch (Seq.zip scoredPopulation accumulatedScores)

（imo）稍微易读的版本

let roulleteWheel numberGenerator (scoredPopulation:ScoredPopulation) =
  Seq.pick isMatch (Seq.zip scoredPopulation accumulatedScores)
  where
    let targetScore =
      let totalScore = totalPopulationFitness scoredPopulation
      Seq.head (numberGenerator 0.0 totalScore)

    let isMatch (score, accumulatedScore) =
      if (accumulatedScore >= targetScore) then
        Some(score)
      else
        None

    let accumulatedScores =
      let scores = Seq.map (fun (_, score) -> score) scoredPopulation
      Seq.skip 1 (Seq.scan (+) 0.0 scores)

因为它首先显示函数的核心部分，然后显示实现细节（我认为是吹毛求疵！）.
我猜F#解析代码文件是不可能的。我说的对吗查看F#的关键字参考似乎并没有显示出我正在寻找的东西。如果它不存在，有没有其他方法可以更好地分解出所示的代码？我想说这是确定的，因为它是，但你永远不知道..