lib/perobs/ObjectBase.rb in perobs-4.2.0 vs lib/perobs/ObjectBase.rb in perobs-4.3.0

@@ -100,9 +100,16 @@
       else
         _referenced_object.equal?(obj)
       end
     end
 
+    # To allow POXReference objects to be used as Hash keys we need to
+    # implement this function. Conveniently, we can just use the PEROBS object
+    # ID since that is unique.
+    def hash
+      @id
+    end
+
     # Shortcut to access the _id() method of the referenced object.
     def _id
       @id
     end