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constexpr bool&#160;</td><td class="memItemRight" valign="bottom"><b>isEmpty</b> () const</td></tr>
<tr class="memdesc:a903246af8db14817c5e756f811c2dd26"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return true if the box is empty. <br /></td></tr>
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