title: Is there equivalent for PHP's print_r in Ruby / Rails?
body: <p>In PHP you can do:</p>
  
  <p><code>print_r($var)</code> or <code>vardump($var)</code> </p>
  
  <p>which prints "human-readible" information about variable.</p>
  
  <p>Is there equivalent functions / helpers for those in Ruby / Rails ?</p>