id="section-3" class="section level4 bs-callout bs-callout-info">
<h4 class="bs-callout bs-callout-info"></h4>
<ul>
<li><p>In (a), <code>LHS</code> takes a character vector of column names and <code>RHS</code> a <em>list of values</em>. <code>RHS</code> just needs to be a <code>list</code>, irrespective of how its generated (e.g., using <code>lapply()</code>, <code>list()</code>, <code>mget()</code>, <code>mapply()</code> etc.). This form is usually easy to program with and is particularly useful when you d