title: NSPredicate that is the equivalent of SQL's LIKE
body: <p>I'm looking for a way to use <code>NSPredicate</code> to set a <code>LIKE</code> condition to fetch objects. In addition to that, an <code>OR</code> would be useful as well. I'm trying to do something where if a user searches "James" I can write an <code>NSPredicate</code> that will do the equivalent of:</p>
  
  <pre><code>select * from users where firstname LIKE '%James%' OR lastname LIKE '%James%';
  </code></pre>