From da8f1674316dfc43fb0eb87e5f9d09b2cc942374 Mon Sep 17 00:00:00 2001
From: Siraaj Khandkar <siraaj@khandkar.net>
Date: Wed, 25 Sep 2013 16:28:21 -0400
Subject: [PATCH] Define cell signature.

---
 polymorphic-life/001/src/polymorphic_life.ml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/polymorphic-life/001/src/polymorphic_life.ml b/polymorphic-life/001/src/polymorphic_life.ml
index a667bc4..ca6d819 100644
--- a/polymorphic-life/001/src/polymorphic_life.ml
+++ b/polymorphic-life/001/src/polymorphic_life.ml
@@ -47,6 +47,15 @@ module Matrix : MATRIX = struct
 end
 
 
+module type CELL = sig
+  type t
+
+  val state : t -> int
+
+  val react : t -> states:int list -> t
+end
+
+
 let main () =
   let pool = Matrix.create ~rows:5 ~cols:5 ~data:() in
   Matrix.iter pool ~f:(
-- 
2.20.1