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afsalthaj/block6.scala Secret

Created June 29, 2018 06:50
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block6.scala
trait DecodeJson[A] {
def fromJson(a: Json): A
def map[B](f: A => B): DecodeJson[B] = new DecodeJson[B] {
def fromJson(a: Json): B = f(self.fromJson(a))
}
}
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