/span><span class="op">:</span><span class="dv">100</span>, is.numeric, <span class="dt">msg =</span> <span class="st">"That makes a lot of numbers."</span>)</a>
<a class="sourceLine" id="cb31-8" title="8"><span class="co">#&gt; That makes a lot of numbers.</span></a></code></pre></div>
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</div>
<div id="on_error" class="section level2">
<h2 class="hasAnchor">
<a href="#on_error" class="anchor"></a><code><a href="reference/on_error.html">on_error()</a></code>
</h2>
<p><code><a href="reference/on_error.