title: Remove last character in a list
body: <p>I am building a list from a dataset as 12345_9876,125675_0987,</p>
  
  <p>I try to remove the last <code>,</code>  from the list like we do for strings..</p>
  
  <pre><code>value.TrimEnd(',');
  </code></pre>
  
  <p>Can we do similar thing for a list?</p>