这是有关countWords的示例。 （斯卡拉）

[origin]
def countWords(text: String): mutable.Map[String,Int] = {
  val counts = mutable.Map.empty[String,Int]
  for (rawWord <- text.split("[,!.]+")) {
    val word = rawWord.toLowerCase
    val oldCount =
      if (counts.contains(word)) counts(word)
      else 0
    counts += (word -> (oldCount + 1))
  }
  return counts
}

[my code]
here is my code.
def countWords2(text: String):mutable.Map[String,Int]s

  text.split("[,!.]").foreach(word =>
    val lowWord = word.toLowerCase()
    val oldCount = if (counts.contains(lowWord)) counts(lowWord) else 0
    counts += (lowWord -> (oldCount + 1))
  )

  return counts
}

我尝试将“ for（）”句子转移到“ foreach”，但收到“无法解析符号”错误消息。 在这种情况下如何使用foreach？