2016-04-13から1日間の記事一覧
aoino.hatenablog.com Refactoring in Scala import monocle.Prism import scalaz.Maybe object SamplePrism { val strToInt: Prism[String, Int] = Prism { str: String => Maybe.fromTryCatchNonFatal(str.toInt) }(_.toString) } Maybeとかと組み合わせる…