xcept</code></a>
<p>(&gt;= Outcome v2.2.0) Hook invoked by the converting move constructors of <code>basic_result</code>.</p></li></ol><li>
	<a href="../reference/policies/all_narrow.html" ><code>all_narrow</code></a>
<p>Policy class defining that hard undefined behaviour should occur on incorrect narrow and wide value, error or exception observation. Inherits publicly from <code>base</code>.</p><li>
	<a href="../reference/policies/error_code_throw_as_system_error_outcome.html" ><code>error_code_throw_as_sy