="https://rdrr.io/r/base/length.html">length</a></span>(objects)</a>
<a class="sourceLine" id="cb6-7" data-line-number="7"></a>
<a class="sourceLine" id="cb6-8" data-line-number="8">attributes &lt;-<span class="st"> </span>letters[<span class="dv">1</span><span class="op">:</span><span class="dv">6</span>]</a>
<a class="sourceLine" id="cb6-9" data-line-number="9">n_attributes &lt;-<span class="st"> </span><span class="kw"><a href="https://rdrr.io/r/base/length.html">length</a></span>(attributes)</a>
<a clas