e>Data.todos.list</code> is <code>null</code> at the beginning. Also, there&#39;s an extra field <code>error</code> for holding an error message, and the view of the <code>Todos</code> component was modified to displays an error message if one exists, or display a loading icon if <code>Data.todos.list</code> is not an array.</p>
<hr>
<h3 id=dynamic-urls><a href=#dynamic-urls>Dynamic URLs</a></h3>
<p>Request URLs may contain interpolations:</p>
<pre><code class=language-javascript>m.request({
    method: &qu