diff options
Diffstat (limited to 'src/library')
| -rw-r--r-- | src/library/scala/collection/generic/CanBuildFrom.scala | 4 | ||||
| -rw-r--r-- | src/library/scala/collection/package.scala | 4 |
2 files changed, 6 insertions, 2 deletions
diff --git a/src/library/scala/collection/generic/CanBuildFrom.scala b/src/library/scala/collection/generic/CanBuildFrom.scala index 9bc5914168..4136b88cf5 100644 --- a/src/library/scala/collection/generic/CanBuildFrom.scala +++ b/src/library/scala/collection/generic/CanBuildFrom.scala @@ -37,8 +37,10 @@ trait CanBuildFrom[-From, -Elem, +To] { */ def apply(from: From): Builder[Elem, To] - /** Creates a new builder from scratch + /** Creates a new builder from scratch. + * * @return a builder for collections of type `To` with element type `Elem`. + * @see scala.collection.breakOut */ def apply(): Builder[Elem, To] } diff --git a/src/library/scala/collection/package.scala b/src/library/scala/collection/package.scala index d5161a0f1a..bcd2fb5d38 100644 --- a/src/library/scala/collection/package.scala +++ b/src/library/scala/collection/package.scala @@ -3,8 +3,10 @@ package scala package object collection { import scala.collection.generic.CanBuildFrom // can't refer to CanBuild here + /** Provides a CanBuildFrom instance that builds a specific target collection (`To') irrespective of the original collection (`From'). + */ def breakOut[From, T, To](implicit b : CanBuildFrom[Nothing, T, To]) = - new CanBuildFrom[From, T, To] { + new CanBuildFrom[From, T, To] { // TODO: could we just return b instead? def apply(from: From) = b.apply() ; def apply() = b.apply() } }
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