1 files changed, 15 insertions, 0 deletions
diff --git a/js/games/nluqo.github.io/~bh/61a-pages/Lectures/3.0/demo.scm b/js/games/nluqo.github.io/~bh/61a-pages/Lectures/3.0/demo.scm
new file mode 100644
index 0000000..d78ae82
--- /dev/null
+++ b/js/games/nluqo.github.io/~bh/61a-pages/Lectures/3.0/demo.scm
@@ -0,0 +1,15 @@
+(define-class (complex real-part imag-part)
+  (method (magnitude)
+    (sqrt (+ (* real-part real-part)
+	     (* imag-part imag-part))))
+  (method (angle)
+    (atan (/ imag-part real-part))) )
+
+(define-class (counter)
+  (instance-vars (count 0))
+  (method (next)
+    (set! count (+ count 1))
+    count) )
+
+(define-class (doubler)
+  (method (say stuff) (se stuff stuff)))