val list = List("a", "a", "a")
list.map("N番目の" + _)
ここのN番目をリストのインデックスにしたい!
zipWithIndex を使うとインデックスを付番したリストを得ることができる。
val list = List("a", "a", "a")
list.zipWithIndex.map { case (item, index) => index + "番目の" + item }
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