Data update

Task/Object-serialization/Ada/object-serialization-1.adb

@@ -0,0 +1,25 @@
+with Ada.Calendar; use Ada.Calendar;
+
+package Messages is
+   type Message is tagged record
+      Timestamp : Time;
+   end record;
+
+   procedure Print(Item : Message);
+   procedure Display(Item : Message'Class);
+
+   type Sensor_Message is new Message with record
+      Sensor_Id : Integer;
+      Reading : Float;
+   end record;
+
+   procedure Print(Item : Sensor_Message);
+
+   type Control_Message is new Message with record
+      Actuator_Id : Integer;
+      Command     : Float;
+   end record;
+
+   procedure Print(Item : Control_Message);
+
+end Messages;