es.html">..</a> <code class="code"><span class="keyword">end</span></code></pre><div class="info module top">
<div class="info-desc">
<p>Byte sequence operations.</p>

<p>A byte sequence is a mutable data structure that contains a
   fixed-length sequence of bytes. Each byte can be indexed in
   constant time for reading or writing.</p>

<p>Given a byte sequence <code class="code">s</code> of length <code class="code">l</code>, we can access each of the
   <code class="code">l</code> bytes of <code class="c