.split s c)</code> is the identity.<br>
<b>Since</b> 4.01<br>
</div>

<pre><span id="VALcut_at"><span class="keyword">val</span> cut_at</span> : <code class="type">string -&gt; char -&gt; string * string</code></pre><div class="info ">
<code class="code"><span class="constructor">String</span>.cut_at s c</code> returns a pair containing the sub-string before
   the first occurrence of <code class="code">c</code> in <code class="code">s</code>, and the sub-string after the
   first occurrence of <code class=