                             &lt;int&gt; &lt;chr&gt;    &lt;list&gt;  </span></a>
<a class="sourceLine" id="cb10-7" data-line-number="7"><span class="co">#&gt;  1 /Library/Frameworks/R.framework/Versions/3.5/Re…     1 library  &lt;list […</span></a>
<a class="sourceLine" id="cb10-8" data-line-number="8"><span class="co">#&gt;  2 /Library/Frameworks/R.framework/Versions/3.5/Re…     2 select   &lt;list […</span></a>
<a class="sourceLine" id="cb10-9" data-line-number="9"><span class="co">#&gt;  3 /Libr