n class="op">)</span></span>
<span><span class="op">}</span><span class="op">)</span></span></code></pre></div>
<p>There is a special value <code>_in_session_</code> for <code>packages</code> argument that loads all packages in the current R session.</p>
<div class="sourceCode" id="cb19"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span><span class="kw"><a href="https://rdrr.io/r/base/library.html" class="external-link">library</a></span><span class="op">(</span><span class="va">foo</span>