pan class="lineno">  139</span>&#160;        <span class="comment">//template &lt;typename T&gt;</span></div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;        <span class="comment">//struct traits</span></div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;        <span class="comment">//{</span></div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;        <span class="comment">//      static const bool is_sig