keyword">operator</span><span class="special">=(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">&amp;</span> <span class="identifier">s</span><span class="special">);</span></code>
                  </p>
                </td>
<td>
                  <p>
                    Assignment operator, equivalent to calling <code class="computeroutput"><span class="identifier">SetExpression</span><s