From: Ramakrishnan Muthukrishnan <vu3rdd@gmail.com>
Date: Sat, 12 Jun 2010 10:54:59 +0000 (+0530)
Subject: added a church-to-numeral fn and test.
X-Git-Url: https://git.rkrishnan.org/frontends/listings/pb2server.py?a=commitdiff_plain;h=1e7207dd5f93dfee0437dd6d4e8ec881d6895b37;p=sicp.git

added a church-to-numeral fn and test.
---

diff --git a/src/sicp/ex2_6.clj b/src/sicp/ex2_6.clj
index 6101e39..39fae1e 100644
--- a/src/sicp/ex2_6.clj
+++ b/src/sicp/ex2_6.clj
@@ -59,4 +59,12 @@
 ;; I used the wikipedia article to study Church Numerals:
 ;; <http://en.wikipedia.org/wiki/Church_encoding#Computation_with_Church_numerals>
 
-;; comments?
\ No newline at end of file
+;; comments?
+
+(defn church-to-numeral [chfn]
+  ((chfn inc) 0))
+
+(deftest test-church-to-numeral
+  (are [x y] [= x y]
+       (church-to-numeral one) 1
+       (church-to-numeral two) 2))
\ No newline at end of file