use instance_eval and class_eval to add functionality within modules

agarie · Apr 15, 2014 · 4ef6255 · 4ef6255
1 parent 9e29ec6
commit 4ef6255
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Showing 2 changed files with 8 additions and 10 deletions.
diff --git a/lib/measurable/cosine.rb b/lib/measurable/cosine.rb
@@ -52,14 +52,16 @@ def cosine_distance(u, v)
     end
 
     def self.extended(base) # :nodoc:
-      base.extend Measurable::Euclidean
-
+      base.instance_eval do
+        extend Measurable::Euclidean
+      end
       super
     end
 
     def self.included(base) # :nodoc:
-      base.include Measurable::Euclidean
-
+      base.class_eval do
+        include Measurable::Euclidean
+      end
       super
     end
   end

diff --git a/lib/measurable/tanimoto.rb b/lib/measurable/tanimoto.rb
@@ -31,23 +31,19 @@ def tanimoto(u, v)
     end
 
     def self.extended(base) # :nodoc:
-      base.extend Measurable::Jaccard
-
       # Tanimoto similarity is the same as Jaccard similarity.
       base.instance_eval do
+        extend Measurable::Jaccard
         alias :tanimoto_similarity :jaccard
       end
-
       super
     end
 
     def self.included(base) # :nodoc:
-      base.include Measurable::Jaccard
-
       base.class_eval do
+        include Measurable::Jaccard
         alias :tanimoto_similarity :jaccard
       end
-
       super
     end
   end