diff options
Diffstat (limited to 'src/main/scala/xyz/driver/common/utils/MapOps.scala')
-rw-r--r-- | src/main/scala/xyz/driver/common/utils/MapOps.scala | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/main/scala/xyz/driver/common/utils/MapOps.scala b/src/main/scala/xyz/driver/common/utils/MapOps.scala new file mode 100644 index 0000000..759fdea --- /dev/null +++ b/src/main/scala/xyz/driver/common/utils/MapOps.scala @@ -0,0 +1,10 @@ +package xyz.driver.common.utils + +final class MapOps[K, V](val self: Map[K, V]) extends AnyVal { + def swap: Map[V, Set[K]] = { + self + .toList + .groupBy { case (_, v) => v } + .mapValues(_.map { case (k, _) => k }.toSet) + } +} |