</span><span class="k">auto</span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">closure</span><span class="p">){</span>
<span class="w">    </span><span class="c1">// do something before invoking the partitioned task</span>
<span class="w">    </span><span class="c1">// ...</span>
<span class="w">    </span>
<span class="w">    </span><span class="c1">// invoke the partitioned task</span>
<span class="w">    </span><span class="n">closure</span><span class="p">();</span>

<span cl