From 6ab86c253ba0eb79b9e6a20effa2d18626accf2b Mon Sep 17 00:00:00 2001
From: Christoph Helma <helma@in-silico.ch>
Date: Thu, 13 Aug 2015 11:56:40 +0200
Subject: OpenBabel can (canonical smiles) instead of inchi as internal
 identifier to avoid OpenBabel InChi bug.

---
 lib/overwrite.rb | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'lib/overwrite.rb')

diff --git a/lib/overwrite.rb b/lib/overwrite.rb
index 2eb0b39..a27d685 100644
--- a/lib/overwrite.rb
+++ b/lib/overwrite.rb
@@ -11,6 +11,12 @@ class Object
   end
 end
 
+class Numeric
+  def percent_of(n)
+    self.to_f / n.to_f * 100.0
+  end
+end
+
 module Enumerable
   # @return [Array] only the duplicates of an enumerable
   def duplicates
-- 
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