title: Difference between map and collect in Ruby?
body: <p>I have Googled this and got patchy / contradictory opinions - is there actually any difference between doing a <code>map</code> and doing a <code>collect</code> on an array in Ruby/Rails? </p>
  
  <p>The <a href="http://www.ruby-doc.org/core/classes/Array.html#M000248" rel="noreferrer">docs</a> don't seem to suggest any, but are there perhaps differences in method or performance?</p>