Polymorphism: Difference between revisions

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@@ Line 1,333: / Line 1,333: @@
 c.x //Evaluates to 12</lang>
 =={{header|Elena}}==
-ELENA 3.4 :
+ELENA 4.x :
-<lang elena>import extensions.
+<lang elena>import extensions;
 class Point
 {
-    int prop X :: _x.
+    prop int X;
-    int prop Y :: _y.
+    prop int Y;
-    constructor new(IntNumber x, IntNumber y)
+    constructor(int x, int y)
-    [
+    {
-        _x := x.
+        X := x;
-        _y := y.
+        Y := y
-    ]
+    }
-    constructor new
+    constructor()
-        <= new(0,0).
+        <= (0,0);
-    print [ console printLine("Point") ]
+    print() { console.printLine("Point") }
 }
-class Circle :: Point
+class Circle : Point
 {
-    int prop R :: _r.
+    prop int R;
-    constructor new
+    constructor()
-        <= new(0).
+        <= (0);
-    constructor new(IntNumber r)
+    constructor(int r)
-        <= new(0, 0, r).
+        <= (0, 0, r);
-    constructor new(IntNumber x, IntNumber y, IntNumber r)
+    constructor(int x, int y, int r)
-        <= new(x, y);
+        <= (x, y)
-    [
+    {
-        _r := r.
+        R := r
-    ]
+    }
-    print [ console printLine("Circle") ]
+    print() { console.printLine("Circle") }
 }
-public program
+public program()
+{
-[
-    var p := Point new.
+    Point p := new Point();
-    var c := Circle new.
+    Point c := new Circle();
-    p print.
+    p.print();
-    c print.
+    c.print()
-]</lang>
+}</lang>
 {{out}}
 <pre>