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nagat01/derived with mirror.scala

Created September 3, 2024 10:49
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derived with mirror.scala
import scala.deriving.Mirror
trait Show[A]:
def show(a: A): String
object Show:
def derived[A](using m: Mirror.ProductOf[A]): Show[A] =
new Show[A]:
def show(a: A): String = m.fromProduct(a.asInstanceOf[Product]).toString
case class B(name: String, age: Int) derives Show
@main def main =
println(summon[Show[B]].show(B("Scala", 3)))
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