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>
                        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 clas