title: Search string in Array<AnyObject> with case insensitive
body: <p>I have application that stores string values from server. Then I am using SearchView for write string that can be in List. It must be case insensitive. So far I have this. But this is not the magic i am looking for.</p>
  
  <pre><code>if (myListTags as NSArray).containsObject(searchBar.text!) {
              print("FOUND")
              getCategoryPick()
  }
  </code></pre>
  
  <p>I tried to join it with <code>caseInsensitiveCompare</code> but i failed. Any help for me?
  It would be perfect if that code can understand letter similarity in czech language .. (č = c, ž = z, í = i ......)</p>