" href="basic_environment.html" title="Class template basic_environment">basic_environment</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span></pre>Copy assignment. </li>
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<pre class="literallayout"><a class="link" href="basic_environment.html" title="Class template basic_environment">basic_environment</a> <span class="special">&amp;</span> <a name="idp51517792-bb"></a><span class="keyword">operator</span><span class="special">=</span><span