X-Git-Url: http://lambda.jimpryor.net/git/gitweb.cgi?p=lambda.git;a=blobdiff_plain;f=hints%2Fcps_hint_3.mdwn;h=fa8b3736d0a6eaa96edddeba6217862eced75f75;hp=845f55678b054e02c82c05f18731ec7f85084088;hb=0683b3c8a32fabb9b78d9827ac809df3a6095434;hpb=4fde59e8440a11db16396496648d9b53fe055670

diff --git a/hints/cps_hint_3.mdwn b/hints/cps_hint_3.mdwn
index 845f5567..fa8b3736 100644
--- a/hints/cps_hint_3.mdwn
+++ b/hints/cps_hint_3.mdwn
@@ -12,16 +12,17 @@ This function is developed in *The Seasoned Schemer* pp. 84-89. It accepts an at
 	                      [(null? l) (k 'notfound)]
 	                      [(eq? (car l) a) (cdr l)]
 	                      [(atom? (car l)) (cons (car l) (aux (cdr l) k))]
-	                      ; when (car l) exists but isn't an atom, we try to remove a from (car l)
-	                      ; if we succeed we prepend the result to (cdr l) and stop
-	                      [else (let ([car2 (let/cc k2
-	                                          ; calling k2 with val will bind car2 to val and continue with the (cond ...) block below
-	                                          (aux (car l) k2))])
-	                              (cond
-	                                ; if a wasn't found in (car l) then prepend (car l) to the result of removing a from (cdr l)
-	                                [(eq? car2 'notfound) (cons (car l) (aux (cdr l) k))]
-	                                ; else a was found in (car l)
-	                                [else (cons car2 (cdr l))]))]))]
+	                      [else
+	                       ; when (car l) exists but isn't an atom, we try to remove a from (car l)
+	                       ; if we succeed we prepend the result to (cdr l) and stop
+	                       (let ([car2 (let/cc k2
+	                                     ; calling k2 with val will bind car2 to val and continue with the (cond ...) block below
+	                                     (aux (car l) k2))])
+	                         (cond
+	                           ; if a wasn't found in (car l) then prepend (car l) to the result of removing a from (cdr l)
+	                           [(eq? car2 'notfound) (cons (car l) (aux (cdr l) k))]
+	                           ; else a was found in (car l)
+	                           [else (cons car2 (cdr l))]))]))]
 	             [lst2 (let/cc k1
 	                     ; calling k1 with val will bind lst2 to val and continue with the (cond ...) block below
 	                     (aux lst k1))])
@@ -30,11 +31,10 @@ This function is developed in *The Seasoned Schemer* pp. 84-89. It accepts an at
 	        [(eq? lst2 'notfound) lst]
 	        [else lst2]))))
 	
-	(gamma 'a '(((a b) ()) (c (d ())))) ; ~~> '(((b) ()) (c (d ())))
-	(gamma 'a '((() (a b) ()) (c (d ())))) ; ~~> '((() (b) ()) (c (d ())))
+	(gamma 'a '(((a b) ()) (c (d ()))))       ; ~~> '(((b) ()) (c (d ())))
+	(gamma 'a '((() (a b) ()) (c (d ()))))    ; ~~> '((() (b) ()) (c (d ())))
 	(gamma 'a '(() (() (a b) ()) (c (d ())))) ; ~~> '(() (() (b) ()) (c (d ())))
-	(gamma 'c '((() (a b) ()) (c (d ())))) ; ~~> '((() (a b) ()) ((d ())))
+	(gamma 'c '((() (a b) ()) (c (d ()))))    ; ~~> '((() (a b) ()) ((d ())))
 	(gamma 'c '(() (() (a b) ()) (c (d ())))) ; ~~> '(() (() (a b) ()) ((d ())))
-	(gamma 'x '((() (a b) ()) (c (d ())))) ; ~~> '((() (a b) ()) (c (d ())))
-	(gamma 'x '(() (() (a b) ()) (c (d ())))) ; ~~> '(() (() (a b) ()) (c (d ())))
+	(gamma 'x '((() (a b) ()) (c (d ()))))    ; ~~> '((() (a b) ()) (c (d ())))