lib/lifegame/life.rb in lifegame-0.1.1 vs lib/lifegame/life.rb in lifegame-0.2.0

@@ -1,12 +1,15 @@
 module Lifegame
   class Life
+    ALIVE = '-'
+    DEAD = '_'
+
     def initialize(life = false)
       @life = life
     end
 
     def to_s
-      alive? ? '.' : '-'
+      alive? ? ALIVE : DEAD
     end
 
     def alive?
       @life
     end