g are returned.</p>
    </div>

    <div class="section level2">
    <h2 id="ref-examples">Examples<a class="anchor" aria-label="anchor" href="#ref-examples"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span><span class="op">{</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="va">code</span> <span class="op">&lt;-</span> <span class="st">"</span></span></span>
<span class="r-in"><span><span class="st">   a &lt;- 2<