a></h2>
    <p>Return the object itself.</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="r-in"><span class="co"># Constant variable</span></span>
<span class="r-in"><span class="va">a</span> <span class="op">&lt;-</span> <span class="fl">1</span></span>
<span class="r-in"></span>
<span class="r-in"><span cl