title: size, length and count in Rails
body: <pre><code>1.9.3p194 :002 &gt; u = User.find_by_email("email@mail.ru")
  1.9.3p194 :005 &gt; u.addresses.size
   =&gt; 1 
  1.9.3p194 :006 &gt; u.addresses.length
   =&gt; 1 
  1.9.3p194 :007 &gt; u.addresses.count 
  </code></pre>
  
  <p>There is no difference between size, length and count in Rails 3.2.3, isn't it?</p>