title: Does MongoDB's Map/Reduce always return results in floats?
body: <p>I am using Mongoid, which is on top of the Ruby MongDB driver.  Even though my Map's emit is giving out a <code>parseInt(num)</code>, and the Reduce's return is giving back also a <code>parseInt(num)</code>, the final results still are floats.</p>
  
  <p>Is that particular to MongoDB?  Any way to make it integer instead?</p>