is_default&lt; value_impl&lt; tag_of&lt; C &gt;::type &gt; &gt;::value &gt;</a></td><td class="desc"></td></tr>
<tr id="row_84_"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="structboost_1_1hana_1_1integral__constant.html" target="_self">boost::hana::integral_constant&lt; bool, !is_default&lt; zero_impl&lt; tag_of&lt; M &gt;::type &gt; &gt;::value &amp;&amp;!is_default&lt; plus_impl&lt; tag_of&lt; M &gt