Jon Pretty

class Flat[T] { type R = T } implicit def flat[T]: Flat[T] = null def f[A, B]: A with B = null.asInstanceOf[A with B] def g[A, B](implicit flat: Flat[A with B]): flat.R = f[A, B] f[Int with Long, Int] // infers Int with Long with Int g[Int with Long,Int] // infers Int with Long

Two things I don’t like: null and asInstanceOf...

Those are mostly to make it fit into a tweet!

Of course) there is no way you actually use that stuff right?)

null.asInstanceOf[...] *running away* =)