week3 evaluator fix

Signed-off-by: Jim Pryor <profjim@jimpryor.net>

diff --git a/assignment_3_evaluator.mdwn b/assignment_3_evaluator.mdwn
index b0835a9..9207c05 100644 (file)
--- a/assignment_3_evaluator.mdwn
+++ b/assignment_3_evaluator.mdwn
@@ -5,23 +5,23 @@ Here are the definitions pre-loaded for working on assignment 3:
 let true = \x y. x in
 let false = \x y. y in
 let and = \l r. l (r true false) false in
 let true = \x y. x in
 let false = \x y. y in
 let and = \l r. l (r true false) false in

-let make_pair = \f s g. g f s in
+let make\_pair = \f s g. g f s in

 let fst = true in
 let snd = false in
 let fst = true in
 let snd = false in

-let empty = make_pair true junk in
+let empty = make\_pair true junk in

 let isempty = \x. x fst in
 let isempty = \x. x fst in

-let make_list = \h t. make_pair false (make_pair h t) in
+let make\_list = \h t. make\_pair false (make\_pair h t) in

 let head = \l. isempty l err (l snd fst) in
 let tail = \l. isempty l err (l snd snd) in
 
 ; a list of numbers to experiment on
 let head = \l. isempty l err (l snd fst) in
 let tail = \l. isempty l err (l snd snd) in
 
 ; a list of numbers to experiment on

-let mylist = make_list 1 (make_list 2 (make_list 3 empty)) in
+let mylist = make\_list 1 (make\_list 2 (make\_list 3 empty)) in

 
 ; church numerals
 let iszero = \n. n (\x. false) true in
 let succ = \n s z. s (n s z) in
 let mul = \m n s. m (n s) in
 
 ; church numerals
 let iszero = \n. n (\x. false) true in
 let succ = \n s z. s (n s z) in
 let mul = \m n s. m (n s) in

-let pred = \n. iszero n 0 (length (tail (n (\p. make_list junk p) empty))) in
+let pred = \n. iszero n 0 (length (tail (n (\p. make\_list junk p) empty))) in

 let leq = \m n. iszero(n pred m) in
 let eq = \m n. and (leq m n)(leq n m) in
 
 let leq = \m n. iszero(n pred m) in
 let eq = \m n. and (leq m n)(leq n m) in
 


@@ -31,10 +31,10 @@ let Y = \f. (\h. f (h h)) (\h. f (h h)) in
 let length = Y (\length l. isempty l 0 (succ (length (tail l)))) in
 
 ; synonyms
 let length = Y (\length l. isempty l 0 (succ (length (tail l)))) in
 
 ; synonyms

-let makePair = make_pair in
+let makePair = make\_pair in

 let nil = empty in
 let isNil = isempty in
 let nil = empty in
 let isNil = isempty in

-let makeList = make_list in
+let makeList = make\_list in

 let isZero = iszero in
 let mult = mul in
 
 let isZero = iszero in
 let mult = mul in