<a name="idm23041-bb"></a><span class="identifier">attribute_values</span><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
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<td><p><span class="term">Requires:</span></p></td>
<td><p><code class="computeroutput">!!*this</code> </p></td>
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<td><p><span class="t