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class Pos
class Super
object Super {
implicit def pos2int(p: Pos): int = 0
}
object Sub extends Super {
class Plus(x: Any) {
def +(y: String): String = x.toString + y
}
implicit def any2plus(x: Any): Plus = new Plus(x)
}
object Test {
import Super._
import Sub._
val p = new Pos
def f(x: int): int = x
f(p+1)
}
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