adapter.rb in nunes-0.5.0

- old
+ new

@@ -1,5 +1,7 @@
+require 'active_support/core_ext/class/subclasses'
+
 module Nunes
   class Adapter
     # Private: Wraps a given object with the correct adapter/decorator.
     #
     # client - The thing to be wrapped.
@@ -53,13 +55,13 @@
 
     # Private: What Ruby uses to separate namespaces.
     ReplaceRegex = /[^a-z0-9\-_]+/i
 
     # Private: The default metric namespace separator.
-    Separator = "."
+    Separator = ".".freeze
 
     # Private
-    Nothing = ""
+    Nothing = "".freeze
 
     # Private: Prepare a metric name before it is sent to the adapter's client.
     def prepare(metric, replacement = Separator)
       escaped = Regexp.escape(replacement)
       replace_begin_end_regex = /\A#{escaped}|#{escaped}\Z/