Add a variable to a class instance at runtime: Difference between revisions

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@@ Line 327: / Line 327: @@
 ELENA does not support adding a field at run-time but it can be simulated with the help of a mix-in.
-ELENA 3.4:
+ELENA 4.x:
-<lang elena>import extensions.
+<lang elena>import extensions;
-class Extender :: BaseExtender
+class Extender : BaseExtender
 {
-    object prop foo :: theField.
+    prop object foo;
-    constructor new : anObject
+    constructor(object)
-    [
+    {
-        theObject := anObject.
+        theObject := object
-    ]
+    }
 }
-public program
+public program()
+{
-[
-    var anObject := 234.
+    var object := 234;
     // extending an object with a field
-    anObject := Extender new(anObject).
+    object := new Extender(object);
-    anObject foo := "bar".
+    object.foo := "bar";
-    console printLine(anObject,".foo=",anObject foo).
+    console.printLine(object,".foo=",object.foo);
-    console readChar
+    console.readChar()
-]</lang>
+}</lang>
 {{out}}
 <pre>