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andresilva/gist:6509211

Created September 10, 2013 13:13
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gistfile1.scala
trait Bar[In <: HList, Out <: HList]
class Foo[T](implicit gen: Generic[T]) {
def apply[L <: HList](implicit bar: Bar[L, gen.Repr]) = null
}
// error: type arguments [L,Foo.this.gen.Repr] do not conform to trait Bar's type parameter bounds [In <: shapeless.HList,Out <: shapeless.HList]
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