title: how to get the nodes with specific element value
body: <p>Could some one please tell me how do we use the text function in the
  XPath query.
  I needed the information for Hillman Library present in the xml</p>
  
  <p><a href="http://www.sis.pitt.edu/~arazeez/Librarydata.xml" rel="nofollow noreferrer">http://www.sis.pitt.edu/~arazeez/Librarydata.xml</a></p>
  
  <pre><code>resultNodes = [rssParser nodesForXPath:@"//Library[1]/Hours/TermOrHolidays" error:nil];.
  </code></pre>
  
  <p>for now I used the [1]. But I wanted to use the text function</p>
  
  <pre><code>NSString *libName = @"Hillman Library";
  resultNodes = [rssParser nodesForXPath:@"//Library[LibraryName/text() = libName]/Hours/TermOrHolidays" error:nil];
  </code></pre>
  
  <p>But this is not working out. Could some one please let me know how I
  go about doing this.</p>
  
  <p>Thanks</p>