diff --git a/u2/list_ops.py b/u2/list_ops.py
index 068983e..248dc48 100644
--- a/u2/list_ops.py
+++ b/u2/list_ops.py
@@ -1,4 +1,3 @@
-
 def append(list1, list2):
     result = []
     for item in list1:
@@ -24,4 +23,14 @@ def length(l):
     result = 0
     for item in l:
         result +=1
-    return result    
\ No newline at end of file
+    return result    
+
+def map(function, list):
+    
+
+def foldl(function, list, initial):
+    
+
+def foldr(function, list, initial):
+
+def reverse(list):