From: Chris Barker <barker@kappa.(none)>
Date: Mon, 4 Oct 2010 00:35:46 +0000 (-0400)
Subject: edits
X-Git-Url: http://lambda.jimpryor.net/git/gitweb.cgi?p=lambda.git;a=commitdiff_plain;h=4cea4f69242f3a229292186c8fa652942f31f8b8

edits
---

4cea4f69242f3a229292186c8fa652942f31f8b8
diff --cc assignment_3_evaluator.mdwn
index eb3c18b6,c910064a..28693f43
--- a/assignment_3_evaluator.mdwn
+++ b/assignment_3_evaluator.mdwn
@@@ -5,18 -5,17 +5,19 @@@ Here are the definitions pre-loaded fo
  let true = \x y. x in
  let false = \x y. y in
  let and = \l r. l (r true false) false in
 +let or = \l r. l true r in
- let make_pair = \f s g. g f s in
- let get_fst = true in
- let get_snd = false in
- let empty = make_pair true junk in
- let isempty = \x. x get_fst in
- let make_list = \h t. make_pair false (make_pair h t) in
- let head = \l. isempty l err (l get_snd get_fst) in
- let tail = \l. isempty l err (l get_snd get_snd) in
++;
+ let make\_pair = \f s g. g f s in
+ let get\_fst = true in
+ let get\_snd = false in
+ let empty = make\_pair true junk in
+ let isempty = \x. x get\_fst in
+ let make\_list = \h t. make\_pair false (make\_pair h t) in
+ let head = \l. isempty l err (l get\_snd get\_fst) in
+ let tail = \l. isempty l err (l get\_snd get\_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
@@@ -41,25 -40,9 +42,26 @@@ let makeList = make\_list i
  let isZero = iszero in
  let mult = mul in
  ;
 +let t1 = (make_list 1 empty) in
 +let t2 = (make_list 2 empty) in
 +let t3 = (make_list 3 empty) 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 tc = (make_list t1 (make_list t23 empty)) in
 +;
 +;sum-leaves t1 ~~> 1
 +;sum-leaves t2 ~~> 2
 +;sum-leaves t3 ~~> 3
 +;sum-leaves t12 ~~> 3
 +;sum-leaves t23 ~~> 5
 +;sum-leaves ta ~~> 6
 +;sum-leaves tb ~~> 6
 +;
  length (tail mylist)
  </textarea>
+ 
  <input id="PARSE" value="Normalize" type="button">
  <input id="ETA" type="checkbox">do eta-reductions too
  <noscript><p>You may not see it because you have JavaScript turned off. Uffff!</p></noscript>