diff --git a/documentation/coffee/do.coffee b/documentation/coffee/do.coffee
index 4a48e2cf18..ce6807e4e8 100644
--- a/documentation/coffee/do.coffee
+++ b/documentation/coffee/do.coffee
@@ -1,4 +1,6 @@
-for filename in list
-  do (filename) ->
-    fs.readFile filename, (err, contents) ->
-      compile filename, contents.toString()
\ No newline at end of file
+coefficients = [1, 2, 3]
+multiples = for j in coefficients
+  do (j) ->
+    (x) -> x * j
+
+alert(f(2) for f in multiples)