title: Validating date times (flutter/dart)
body: <p>Has anyone gotten any meaningful use out of datetime.tryparse? I'm trying to accept date formats such as...</p>
  
  <pre><code>MM/dd/yyyy
  MM-dd-yyyy
  MM.dd.yyyy
  </code></pre>
  
  <p>it seems <code>DateTime.tryParse</code> always returns null for all of these formats. Is there a library or a more convenient way to accept date times of different formats.</p>