pply instead of parallel::clusterApplyLB.</p></dd>


<dt>env</dt>
<dd><p>environment to look for values in.</p></dd>

</dl></div>
    <div id="value">
    <h2>Value</h2>
    

<p>resulting data.table (intermediate tables can sometimes be mutated as is practice with data.table).</p>
    </div>
    <div id="details">
    <h2>Details</h2>
    <p>Care must be taken that the calculation partitioning is course enough to ensure a correct calculation.  For example: anything
one is joining on, aggregating over, or r