s="link" href="../make.html" title="Struct template make">proto::make</a></code>&lt;O&gt;(Expr, State, Data)&gt;::type</code>
                        and let <code class="computeroutput">T'</code> be <code class="computeroutput">O'(A<sub>0</sub>,&#8230;A<sub>n</sub> ...)</code>.
                      </p></li>
<li class="listitem"><p>
                        Otherwise, let <code class="computeroutput">T'</code>
                        be <code class="computeroutput">boost::result_of&lt;<code class="computer