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trait MyTrait[T <: { var id: U }, U] {
def test(t: T): T = {
val v: U = t.id
t.id = v
t
}
}
class C (var id: String){
// uncommenting this fixes it
// def id_=(x: AnyRef) { id = x.asInstanceOf[String] }
}
class Test extends MyTrait[C, String]
object Test {
def main(args: Array[String]): Unit = {
val t = new Test()
val c1 = new C("a")
val c2 = t.test(c1)
}
}
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