Update array.rb

igrigorik · May 9, 2017 · 5be22ab · 5be22ab
1 parent 846448a
commit 5be22ab
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/core_extensions/array.rb b/lib/core_extensions/array.rb
@@ -2,7 +2,7 @@ class Array
   def entropy
     each_with_object(Hash.new(0)) do |i, result|
       result[i] += 1
-    end.values.sum do |count|
+    end.values.inject(0, :+) do |count|
       percentage = count.to_f / length
 
       -percentage * Math.log2(percentage)