Initial commit with standard lib, might be used a example of cake

1 files changed, 24 insertions, 0 deletions

diff --git a/src/main/scala/com/drivergrp/core/id.scala b/src/main/scala/com/drivergrp/core/id.scala
new file mode 100644
index 0000000..29b8d99
--- /dev/null
+++ b/src/main/scala/com/drivergrp/core/id.scala
@@ -0,0 +1,24 @@
+package com.drivergrp.core
+
+import scalaz._
+
+
+object id {
+
+  trait Tagged[+V, +Tag]
+  type @@[+V, +Tag] = V with Tagged[V, Tag]
+
+  type Id[+Tag] = Long @@ Tag
+  object Id {
+    def apply[Tag](value: Long) = value.asInstanceOf[Id[Tag]]
+  }
+
+  implicit def idEqual[T]: Equal[Id[T]] = Equal.equal[Id[T]](_ == _)
+
+  type Name[+Tag] = String @@ Tag
+  object Name {
+    def apply[Tag](value: String) = value.asInstanceOf[Name[Tag]]
+  }
+
+  implicit def nameEqual[T]: Equal[Name[T]] = Equal.equal[Name[T]](_ == _)
+}