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Diffstat (limited to 'tests/untried/pos/spec-super.scala')
-rw-r--r-- | tests/untried/pos/spec-super.scala | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tests/untried/pos/spec-super.scala b/tests/untried/pos/spec-super.scala new file mode 100644 index 000000000..67179e023 --- /dev/null +++ b/tests/untried/pos/spec-super.scala @@ -0,0 +1,20 @@ +import scala.collection.immutable._ +import scala.collection.mutable.ListBuffer +import scala.collection.generic._ + +trait Base[+A] extends Traversable[A] { + def add[B >: A, That](that: Traversable[B])(implicit bf: CanBuildFrom[Base[A], B, That]): That = { + val b = bf(this) + b ++= this + b ++= that + b.result + } + +} + +abstract class Derived[@specialized +A] extends Base[A] { + override def add[B >: A, That](that: Traversable[B])(implicit bf: CanBuildFrom[Base[A], B, That]): That = { + val b = bf(this) + super.add[B, That](that) + } +} |