an class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Checks to see if a character is within a character range, irregardless of case.</p>
<p>

</p>
<div class="note"><table border="0" summary="Note">
<tr>
<td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../doc/src/images/note.png"></td>
<th align="left">Note</th>
</tr>
<tr><td align="left" valign="top"><p>The default implementation doesn't do proper Unicode case folding, b