Inheritance/Multiple: Difference between revisions

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@@ Line 237: / Line 237: @@
     MOBILE_PHONE
 end</lang>
+ELENA only permits inheritance from one parent class. However, mixins are supported
+<lang elena>#import system.
+#symbol CameraFeature =
+{
+    #method cameraMsg
+        = "camera".
+}.
+#class MobilePhone
+{
+    #method mobileMsg
+        = "phone".
+}
+#class CameraPhone :: MobilePhone
+{
+    #method => CameraFeature.
+}
+#symbol program =
+[
+   #var cp := CameraPhone new.
+   console writeLine:(cp cameraMsg).
+   console writeLine:(cp mobileMsg).
+].</lang>
+Alternatively a group object may be created
+<lang elena>#import system.
+#import system'dynamic.
+#class CameraFeature
+{
+    #method cameraMsg
+        = "camera".
+}
+#class MobilePhone
+{
+    #method mobileMsg
+        = "phone".
+}
+#symbol CameraPhone =
+{
+   new = MobilePhone new mix &into:(CameraFeature new).
+}.
+#symbol program =
+[
+   #var cp := CameraPhone new.
+   console writeLine:(cp cameraMsg).
+   console writeLine:(cp mobileMsg).
+].</lang>
 =={{header|Fantom}}==