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class B[@specialized(Int, AnyRef, Unit) A, @specialized(Int, AnyRef, Unit) B](f: A => B)
class C[@specialized(Int, AnyRef) A, @specialized(Int, AnyRef) B, @specialized(Int, AnyRef) C](f: (A, B) => C)
object Test {
def main(args:Array[String]) {
def show(x: Any) = println(x.getClass.getName)
show(new B((x: Int) => 1))
show(new B((x: Int) => "abc"))
show(new B((x: Int) => ()))
show(new B((x: AnyRef) => 1))
show(new B((x: AnyRef) => "abc"))
show(new B((x: AnyRef) => ()))
show(new B((x: Unit) => 1))
show(new B((x: Unit) => "abc"))
show(new B((x: Unit) => ()))
show(new C((x: Int, y: Int) => 1))
show(new C((x: Int, y: Int) => "abc"))
show(new C((x: Int, y: AnyRef) => 1))
show(new C((x: Int, y: AnyRef) => "abc"))
show(new C((x: AnyRef, y: Int) => 1))
show(new C((x: AnyRef, y: Int) => "abc"))
show(new C((x: AnyRef, y: AnyRef) => 1))
show(new C((x: AnyRef, y: AnyRef) => "abc"))
}
}
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