tem"><p>
                        If <code class="computeroutput">T</code> if of the form
                        <code class="computeroutput">O(A<sub>0</sub>,&#8230;A<sub>n</sub>)</code>, then let <code class="computeroutput">O'</code>
                        be <code class="computeroutput">boost::result_of&lt;<code class="computeroutput"><a class="link" href="../make.html" title="Struct template make">proto::make</a></code>&lt;O&gt;(Expr, State, Data)&gt;::type</code>
                        and let <code 