Monkeypatch to support both ruby 1.8 and 1.9 (key vs index method) on…

… naives bayes implementation
richardsondx · Feb 6, 2012 · 6259ee3 · 6259ee3
1 parent 8d465e9
commit 6259ee3
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/lib/ai4r/classifiers/naive_bayes.rb b/lib/ai4r/classifiers/naive_bayes.rb
@@ -54,6 +54,7 @@ module Classifiers
     #     build data
     #   b.eval(["Red", "SUV", "Domestic"])
     #
+
     class NaiveBayes < Classifier
 
       parameters_info :m => "Default value is set to 0. It may be set to a value greater than " +
@@ -257,3 +258,8 @@ def [](index)
     end
   end
 end
+
+# Monkeypatch to support both ruby 1.8 and 1.9 (key vs index method)
+class Hash
+  alias_method(:key, :index) unless method_defined?(:key)
+end