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import scala.collection.generic.GenericTraversableTemplate
import scala.collection.Iterable
class IterableOps[CC[+B] <: Iterable[B] with GenericTraversableTemplate[B, CC], A1, A2](tuple: (CC[A1], Iterable[A2])) {
def unzip: (CC[A1], CC[A2]) = sys.error("foo")
}
object Test {
implicit def tupleOfIterableWrapper[CC[+B] <: Iterable[B] with GenericTraversableTemplate[B, CC], A1, A2](tuple: (CC[A1], Iterable[A2]))
= new IterableOps[CC, A1, A2](tuple)
val t = (List(1, 2, 3), List(6, 5, 4))
tupleOfIterableWrapper(t) unzip
t unzip
}
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