e equivalent:</p>
<pre><code>n &lt;- 2:-2
n &lt;- c(2,1,0,-1,-2)</code></pre>
<p>As a special case, a sequence of zeros can also be represented in the
dump format by <code>integer(x)</code> and <code>double(x)</code>, for type int
and double, respectively. Here <code>x</code> is a non-negative integer to
specify the length. If <code>x</code> is <span class="math inline">\(0\)</span>, it can be omitted. The
following are some examples.</p>
<pre><code>x1 &lt;- integer()
x2 &lt;- integer(0)
x3 &lt;- integer(2)