@rxg: , :
rows IndexedSeq[Row], Row - Apache POI Excel. traverse, Scalaz. Validation - Scalaz.
GryphonError ADT .
rows.zipWithIndex.traverse[({type L[X] = Validation[Seq[GryphonError], X]})#L, Seq[Any]] { case (row, r) =>
}
scalac .
IDEA- :
Type mismatch, expected: ((Row, Int) => F[B])
actual: ((Row, Int) => F[IndexedSeq[B]])
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