NightRa · August 29, 2015 13:57 · Mar 7, 2014 · Mar 7, 2014
diff --git a/gistfile1.txt → decorator.scala b/gistfile1.txt → decorator.scala
@@ -1,22 +1,15 @@
-trait Decorable[A, B <: Decorator] {
+trait Decorable[A, B] {
   def decorate(obj: A, dec: B): Either[String, A]
 }
 
 object Decorator {
-  def decorate[A, B <: Decorator](obj: A, dec: B)(implicit d: Decorable[A,B]) = {
-    d.decorate(obj, dec)
-  }
-}
-
-abstract class Decorator {
-
+  def decorate[A, B](implicit d: Decorable[A,B]) = d
 }
 
-
 object TagsDecorator {
 
   implicit object DecorableClick extends Decorable[Click, TagsDecorator] {
-    override def decorate[B <: TagsDecorator](obj: Click, dec: B) = {
+    override def decorate(obj: Click, dec: TagsDecorator) = {
       Try(Right(obj.copy(tags = dec.getTagsForCid(obj.dst_cid)))).recover { 
         case e: Throwable => Left(e.getMessage)
       }.get

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -0,0 +1,48 @@
+trait Decorable[A, B <: Decorator] {
+  def decorate(obj: A, dec: B): Either[String, A]
+}
+
+object Decorator {
+  def decorate[A, B <: Decorator](obj: A, dec: B)(implicit d: Decorable[A,B]) = {
+    d.decorate(obj, dec)
+  }
+}
+
+abstract class Decorator {
+
+}
+
+
+object TagsDecorator {
+
+  implicit object DecorableClick extends Decorable[Click, TagsDecorator] {
+    override def decorate[B <: TagsDecorator](obj: Click, dec: B) = {
+      Try(Right(obj.copy(tags = dec.getTagsForCid(obj.dst_cid)))).recover { 
+        case e: Throwable => Left(e.getMessage)
+      }.get
+    }
+  }
+
+}
+
+
+
+class TagsDecorator extends Decorator {
+
+  def getTagsForCid(cid: Long): List[String] = {
+    List("f")
+  }
+
+}
+
+case class A {}
+
+
+object Main {
+
+  val b: TagsDecorator = new TagsDecorator
+
+  import TagsDecorator._
+
+
+}
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