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Diffstat (limited to 'src/library/scala/collection/mutable/MapLike.scala')
| -rw-r--r-- | src/library/scala/collection/mutable/MapLike.scala | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/library/scala/collection/mutable/MapLike.scala b/src/library/scala/collection/mutable/MapLike.scala index 44af886cf5..949e5e3536 100644 --- a/src/library/scala/collection/mutable/MapLike.scala +++ b/src/library/scala/collection/mutable/MapLike.scala @@ -61,6 +61,18 @@ trait MapLike[A, B, +This <: MapLike[A, B, This] with Map[A, B]] override protected[this] def newBuilder: Builder[(A, B), This] = empty protected[this] override def parCombiner = ParMap.newCombiner[A, B] + + /** Converts this $coll to a sequence. + * + * ```Note```: assumes a fast `size` method. Subclasses should override if this is not true. + */ + override def toSeq: collection.Seq[(A, B)] = { + // ArrayBuffer for efficiency, preallocated to the right size. + val result = new ArrayBuffer[(A, B)](size) + foreach(result += _) + result + } + /** Adds a new key/value pair to this map and optionally returns previously bound value. * If the map already contains a |