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object Test extends App {
abstract class Value {
}
case class Num(value: Int) extends Value {
override def toString = value.toString;
}
implicit def conversions(x: Value) = new {
def toInt =
x match {
case Num(n) => n
case _ => throw new RuntimeException
}
}
def eval(v: Value): Value = {
println("hey")
Num(1)
}
eval(Num(1)).toInt
}
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