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object sigs {
type Lst[A] = List[A]
type Twin[B] = (B, B)
var x = 7 * 9
class Base {
def foo(x: Int): Any = 33
def foo: Object = "x"
}
class Sub extends Base {
override def foo = "abc"
override def foo(x: Int) = "abc"
}
trait A { self: B =>
type AA
val a: AA & BB
}
trait B { this: A =>
type BB
val b: AA & BB
}
class C extends A with B {
type AA = String
type BB = AnyRef
val a = ""
val b = ""
}
}
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