ode">s1</code> and <code class="code">s2</code> and returns the result
    as a new byte sequence.</p>
</div>
<ul class="info-attributes">
<li><b>Since</b> 4.05.0 in BytesLabels</li>
<li><b>Raises</b> <code>Invalid_argument</code> if the result is longer than
    <a href="Sys.html#VALmax_string_length"><code class="code">Sys.max_string_length</code></a> bytes.</li>
</ul>
</div>

<pre id="VALiter">val iter : f:(char -&gt; unit) -&gt; bytes -&gt; unit</pre><div class="info ">
<div class="info-desc">
<p><code 