在Scala中，是否有一种方法可以在沿着折叠样式传递值时映射集合？

Question

在Scala中，有没有办法在沿着折叠样式传递值时映射集合？类似的东西：

case class TxRecord(name: String, amount: Int)
case class TxSummary(name: String, amount: Int, balance: Int)

val txRecords: Seq[TxRecord] = txRecordService.getSortedTxRecordsOfUser("userId")

val txSummarys: Seq[TxSummary] = txRecords.foldMap(0)((sum, txRecord) =>
  (sum + txRecord.amount, TxSummary(txRecord.name, txRecord.amount, sum + txRecord.amount)))