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| author | Paul Phillips <paulp@improving.org> | 2011-06-21 17:20:39 +0000 |
|---|---|---|
| committer | Paul Phillips <paulp@improving.org> | 2011-06-21 17:20:39 +0000 |
| commit | 5c416166c22abfb5ca0a595b468844708dcdaa45 (patch) | |
| tree | c8156556a6dd02a0645886f1f29591dcb4c1d8c5 /src/library | |
| parent | d4f8dc660a9b17b30b7c6b909b5a15d028ce7c37 (diff) | |
| download | scala-5c416166c22abfb5ca0a595b468844708dcdaa45.tar.gz scala-5c416166c22abfb5ca0a595b468844708dcdaa45.tar.bz2 scala-5c416166c22abfb5ca0a595b468844708dcdaa45.zip | |
Routed Stream.+: through cons to avoid some tru...
Routed Stream.+: through cons to avoid some truly pathological
performance. Closes #4697, no review.
Diffstat (limited to 'src/library')
| -rw-r--r-- | src/library/scala/collection/immutable/Stream.scala | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/library/scala/collection/immutable/Stream.scala b/src/library/scala/collection/immutable/Stream.scala index 95ffaf5a3e..5f90202522 100644 --- a/src/library/scala/collection/immutable/Stream.scala +++ b/src/library/scala/collection/immutable/Stream.scala @@ -146,6 +146,10 @@ self => ) else super.++(that)(bf) + override def +:[B >: A, That](elem: B)(implicit bf: CanBuildFrom[Stream[A], B, That]): That = + if (isStreamBuilder(bf)) asThat(cons(elem, this)) + else super.+:(elem)(bf) + /** * Create a new stream which contains all intermediate results of applying the operator * to subsequent elements left to right. |