lib/aemo/dispatchable.rb in aemo-0.1.27 vs lib/aemo/dispatchable.rb in aemo-0.1.28

@@ -1,7 +1,7 @@
 module AEMO
   class Region
-    DISPATCH_TYPE   = ['Generator','Load Norm Off','Network Service Provider']
-    CATEGORY        = ['Market','Non-Market']
-    CLASSIFICATION  = ['Scheduled','Semi-Scheduled','Non-Scheduled']
+    DISPATCH_TYPE   = ['Generator', 'Load Norm Off', 'Network Service Provider'].freeze
+    CATEGORY        = ['Market', 'Non-Market'].freeze
+    CLASSIFICATION  = ['Scheduled', 'Semi-Scheduled', 'Non-Scheduled'].freeze
   end
-end
\ No newline at end of file
+end