title: Meaning of the "patch" keyword in a .dart file
body: <p>Here is sample in Dart language:</p>
  
  <pre class="lang-dart prettyprint-override"><code>patch class List&lt;E&gt; {
  }
  </code></pre>
  
  <p>This is not patch file because it has extension <code>.dart</code> and contains regular source code written in Dart language except for <code>patch</code> keyword.</p>
  
  <p>Will be this keyword standardized in future in <a href="http://www.ecma-international.org/memento/TC52.htm" rel="nofollow noreferrer">TC52 - Dart - Ecma International</a>?</p>