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// ticket #3378, overloaded specialized variants
import scala.collection.{Traversable,TraversableLike};
import scala.collection.generic.CanBuildFrom;
trait PartialMap[@specialized A,@specialized B]
extends PartialFunction[A,B] with Iterable[(A,B)] {
// commenting out this declaration gives a different exception.
/** Getter for all values for which the given key function returns true. */
def apply(f : (A => Boolean)) : Iterator[B] =
for ((k,v) <- iterator; if f(k)) yield v;
// if this is commented, it compiles fine:
def apply[This <: Traversable[A], That](keys : TraversableLike[A,This])
(implicit bf: CanBuildFrom[This, B, That]) : That = keys.map(apply);
}
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