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asflierl/Meep.scala

Created May 11, 2016 09:08
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Meep.scala
class Meep[A, B](b: B) { def meep(a: A, f: B => B): Option[(B, B)] = Some(b, f(b)) }
class Moop extends Meep[Int, String]("meep") { def meep(a: Int)(f: String => String): Option[String] = super.meep(a, f).map(_._2) }
println(new Moop().meep(42, identity).map(_._2)) //witness ClassCastException
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asflierl commented May 11, 2016 •
edited

Should fail to compile (with something like error: name clash between defined and inherited member), but compiles fine with Scala 2.11.8.

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