dler</a> &amp;ref) noexcept</td></tr>
<tr class="memdesc:a891037fd8c4d3d4eb6dca94ebbd0ab74"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructs a group from a set of storage classes.  <br /></td></tr>
<tr class="separator:a891037fd8c4d3d4eb6dca94ebbd0ab74"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a02195bbadcbe2f41854c7dc0a0a178e1" id="r_a02195bbadcbe2f41854c7dc0a0a178e1"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="#a51f55ba9c654