added new aliasing example

pgbovine · pgbovine · commit ee24c7135dba · 2012-08-05T18:40:12.000-07:00
diff --git a/PyTutorGAE/js/edu-python-tutor.js b/PyTutorGAE/js/edu-python-tutor.js
@@ -317,6 +317,11 @@ $(document).ready(function() {
     $.get("example-code/aliasing/aliasing7.txt", setCodeMirrorVal);
     return false;
   });
+  $('#aliasing8Link').click(function() {
+    $.get("example-code/aliasing/aliasing8.txt", setCodeMirrorVal);
+    return false;
+  });
+
 
   $('#ll1Link').click(function() {
     $.get("example-code/linked-lists/ll1.txt", setCodeMirrorVal);
diff --git a/PyTutorGAE/tutor.html b/PyTutorGAE/tutor.html
@@ -128,7 +128,8 @@
 <a id="aliasing4Link" href="#">aliasing 4</a> |
 <a id="aliasing5Link" href="#">aliasing 5</a> |
 <a id="aliasing6Link" href="#">aliasing 6</a> |
-<a id="aliasing7Link" href="#">aliasing 7</a>
+<a id="aliasing7Link" href="#">aliasing 7</a> |
+<a id="aliasing8Link" href="#">aliasing 8</a>
 
 </p>
 
diff --git a/example-code/aliasing/aliasing8.txt b/example-code/aliasing/aliasing8.txt
@@ -0,0 +1,8 @@
+# test whether heap objects "jiggle" between steps
+x = [1, [2, [3, None]]]
+y = [4, [5, [6, None]]]
+
+x[1][1] = y[1] # hopefully no jiggle!
+
+x = set(['apple', 'banana', 'carrot'])
+
