edits

[lambda.git] / assignment3.mdwn

diff --git a/assignment3.mdwn b/assignment3.mdwn
index 289f818..4da627a 100644 (file)
--- a/assignment3.mdwn
+++ b/assignment3.mdwn
@@ -1,6 +1,19 @@
 Assignment 3
 ------------
 
 Assignment 3
 ------------
 

+Erratum corrected 11PM Sun 3 Oct: the following line
+
+       let tb = (make_list t12 (make_list t3 empty)) in
+
+originally read 
+
+       let tb = (make_list t12 t3) in
+
+This has been corrected below, and in the preloaded evaluator for 
+working on assignment 3.
+
+
+

 Once again, the lambda evaluator will make working through this
 assignment much faster and more secure.
 
 Once again, the lambda evaluator will make working through this
 assignment much faster and more secure.
 


@@ -117,7 +130,7 @@ Expected behavior:
        let t12 = (make_list t1 (make_list t2 empty)) in
        let t23 = (make_list t2 (make_list t3 empty)) in
        let ta = (make_list t1 t23) in
        let t12 = (make_list t1 (make_list t2 empty)) in
        let t23 = (make_list t2 (make_list t3 empty)) in
        let ta = (make_list t1 t23) in

-       let tb = (make_list t12 t3) in
+       let tb = (make_list t12 (make_list t3 empty)) in

        let tc = (make_list t1 (make_list t23 empty)) in
 
        sum-leaves t1 ~~> 1
        let tc = (make_list t1 (make_list t23 empty)) in
 
        sum-leaves t1 ~~> 1