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author | Aleksandar Prokopec <aleksandar.prokopec@gmail.com> | 2015-02-12 20:10:31 +0100 |
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committer | Aleksandar Prokopec <aleksandar.prokopec@gmail.com> | 2015-02-12 20:14:19 +0100 |
commit | e068345288f9a7fe8f4d3eb23fe0b91240132de1 (patch) | |
tree | a91efcfd624cfb09c3f67e9c56ab3e52d2a25428 /src/library/scala/collection/concurrent/Map.scala | |
parent | 178e8df9b6a91375a6162721a0cbc2d90bcc7451 (diff) | |
download | scala-e068345288f9a7fe8f4d3eb23fe0b91240132de1.tar.gz scala-e068345288f9a7fe8f4d3eb23fe0b91240132de1.tar.bz2 scala-e068345288f9a7fe8f4d3eb23fe0b91240132de1.zip |
Fix SI-9147 Override `getOrElseUpdate` in `concurrent.Map`.
Also, add a ScalaCheck test.
Diffstat (limited to 'src/library/scala/collection/concurrent/Map.scala')
-rw-r--r-- | src/library/scala/collection/concurrent/Map.scala | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/library/scala/collection/concurrent/Map.scala b/src/library/scala/collection/concurrent/Map.scala index 2eea15b8dc..f0a5f57225 100644 --- a/src/library/scala/collection/concurrent/Map.scala +++ b/src/library/scala/collection/concurrent/Map.scala @@ -86,4 +86,15 @@ trait Map[A, B] extends scala.collection.mutable.Map[A, B] { * @return `Some(v)` if the given key was previously mapped to some value `v`, or `None` otherwise */ def replace(k: A, v: B): Option[B] + + override def getOrElseUpdate(key: A, op: =>B): B = get(key) match { + case Some(v) => v + case None => + val v = op + putIfAbsent(key, v) match { + case Some(nv) => nv + case None => v + } + } + } |