File: t404.scala

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scala 2.11.12-6
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trait AbsIterator {
  type T
  def next: T
}
class StringIterator extends AbsIterator {
  type T = Char
  def next = 'a'
}
trait SyncIterator extends AbsIterator {
  abstract override def next: T = super.next
}
class I extends StringIterator with SyncIterator