ass="code">contains&nbsp;s&nbsp;c</code> is equivalent to <code class="code">contains_from<br>
&nbsp;&nbsp;&nbsp;&nbsp;s&nbsp;0&nbsp;c</code>.</p>

<p>Raise <code class="code"><span class="constructor">Invalid_argument</span></code> if <code class="code">start</code> is not a valid position in <code class="code">s</code>.</p>
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<pre><span id="VALrcontains_from"><span class="keyword">val</span> rcontains_from</span> : <code class="type">bytes -&gt; int -&gt; char -&gt; bool</code></pre><div clas