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Diffstat (limited to 'src/library/scala/collection/MapLike.scala')
| -rw-r--r-- | src/library/scala/collection/MapLike.scala | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/library/scala/collection/MapLike.scala b/src/library/scala/collection/MapLike.scala index ce78fb705a..0d012d01b7 100644 --- a/src/library/scala/collection/MapLike.scala +++ b/src/library/scala/collection/MapLike.scala @@ -334,7 +334,9 @@ self => override /*PartialFunction*/ def toString = super[IterableLike].toString - override def hashCode() = this map (_.##) sum + // This hash code must be symmetric in the contents but ought not + // collide trivially. + override def hashCode() = util.MurmurHash.symmetricHash(this,Map.hashSeed) /** Compares two maps structurally; i.e. checks if all mappings * contained in this map are also contained in the other map, |