 class="fa fa-book" aria-hidden="true"></i> <code>std::error_code</code></a> and <code>policy::</code><a href="../../reference/aliases/default_policy.html" class="api-reference"><code>default_policy</code></a>.</p>

<p>This type alias always references the <code>std</code> edition of things, unlike <a href="../../reference/aliases/result.html" class="api-reference"><code>result&lt;T, E = varies, NoValuePolicy = policy::default_policy&lt;T, E, void&gt;&gt;</code></a> which references either this alias or <a 