1 files changed, 11 insertions, 4 deletions
diff --git a/lib/roo/excelx/coordinate.rb b/lib/roo/excelx/coordinate.rb
index 53b24ba..4f61b17 100644
--- a/lib/roo/excelx/coordinate.rb
+++ b/lib/roo/excelx/coordinate.rb
@@ -1,11 +1,18 @@
 module Roo
   class Excelx
-    class Coordinate
-      attr_accessor :row, :column
+    class Coordinate < ::Array
 
       def initialize(row, column)
-        @row = row
-        @column = column
+        super() << row << column
+        freeze
+      end
+
+      def row
+        self[0]
+      end
+
+      def column
+        self[1]
       end
     end
   end