Initial extraction of Driver non-specific utilities

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)
+  }
+}