section>
<section><h2>Returns</h2>
<p>A delegate that is used to actually perform the update steps. The optimised values are stored in the "default"
         attributes of the elements of wrt.
</p>
</section>
<section><h2>Example</h2>

<pre class="code"><code class="lang-d"><span class="kwd">import </span><span class="pln">std<wbr/></span><span class="pun">.</span><span class="pln">random </span><span class="pun">: </span><span class="pln">uniform</span><span class="pun">;

</span><span class="com">//Genera