lib/excelfile/sheet_names.rb in rubyfromexcel-0.0.4 vs lib/excelfile/sheet_names.rb in rubyfromexcel-0.0.5

@@ -1,6 +1,17 @@
 # FIXME: This is obviously bad programming. What if we multithread?!
 module RubyFromExcel
   class SheetNames < Hash
     include Singleton
+    
+    def marshal_dump
+      map { |a,b| [a,b] }
+    end
+
+    def marshal_load array
+      array.each do |sheet|
+        self[sheet.first] = sheet.last
+      end
+    end
+    
   end
 end
\ No newline at end of file