contains_from">val rcontains_from : bytes -&gt; int -&gt; char -&gt; bool</pre><div class="info ">
<div class="info-desc">
<p><code class="code">rcontains_from&nbsp;s&nbsp;stop&nbsp;c</code> tests if byte <code class="code">c</code> appears in <code class="code">s</code> before
    position <code class="code">stop+1</code>.</p>
</div>
<ul class="info-attributes">
<li><b>Raises</b> <code>Invalid_argument</code> if <code class="code">stop&nbsp;&lt;&nbsp;0</code> or <code class="code">stop+1</code> is not a va