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<div class="refsect2">
<a name="idm42340"></a><h3>
<a name="idm36455-bb"></a><code class="computeroutput">old_value_copy</code> public member functions</h3>
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<pre class="literallayout"><span class="identifier">T</span> <span class="keyword">const</span>  <span class="special">&amp;</span> <a name="idm36456-bb"></a><span class="identifier">old</span><span class="special">(</span><span class="spe