<code>parallel</code> package.  For a worked example with significant speedup please see <a href="https://github.com/WinVector/rqdatatable/blob/master/extras/Parallel_rqdatatable.md" class="external-link">https://github.com/WinVector/rqdatatable/blob/master/extras/Parallel_rqdatatable.md</a>.</p>
    </div>

    <div id="ref-usage">
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">ex_data_table_parallel</span><span class="op">(</span></span>
<span>  <span class="va">optree<