nst</span> <span class="identifier">T</span> <span class="special">&amp;</span> val<span class="special">)</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="idp100370432"></a><h2>Description</h2>
<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>returns true on an emp