ntifier">shared</span>
    <span class="special">{</span>
        <span class="keyword">explicit</span> <span class="identifier">shared</span><span class="special">(</span><span class="identifier">Input</span><span class="special">)</span> <span class="special">{}</span>
    <span class="special">};</span>
<span class="special">};</span>
</pre>
<p>
        It is possible to derive the struct <code class="computeroutput"><span class="identifier">unique</span></code>
        from the type <code class="compute