title: Collection/Array contains method
body: <p>i was wondering if there's contains method for <strong>collections/array</strong> in EL 2.2 
  or i will have to make a custom one ?</p>
  
  <p><strong>REQUIREMENT</strong>: i have a string array, and i want to find if it contains a specific string.</p>
  
  <p><strong>CASE</strong>: i am looping on list of <strong>input checkboxes</strong> to render them, and i want to check the current checkbox, if it's value exists in the array of checkboxes.</p>
  
  <p><strong>UPDATE</strong>: </p>
  
  <ul>
  <li><p>is such method is available in EL?</p></li>
  <li><p>If such method is not available, then please provide your suggestion for <strong>best performance</strong> method for a string array contains an element.</p></li>
  </ul>