https://svn.boost.org/trac10/ticket/4604 <p> According to fusion documentation, result of fusion::push_back is a model of Associative Sequence if its sequence parameter implements the Associative Sequence model. However, this is not the case as fusion::push_back constructs a fusion::joint_view&lt;seq, fusion::single_view&lt;val&gt; const&gt;. This joint view is only associative iff both of its underlying sequences are. The fusion::single_view is not associative, though. </p> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/4604 Trac 1.4.3 Christopher Schmidt Sat, 28 Aug 2010 09:41:26 GMT https://svn.boost.org/trac10/ticket/4604#comment:1 https://svn.boost.org/trac10/ticket/4604#comment:1 <ul> <li><strong>status</strong> <span class="trac-field-old">new</span> → <span class="trac-field-new">closed</span> </li> <li><strong>resolution</strong> → <span class="trac-field-new">fixed</span> </li> <li><strong>milestone</strong> <span class="trac-field-old">To Be Determined</span> → <span class="trac-field-new">Boost-1.45.0</span> </li> </ul> <p> Fixed in <a class="changeset" href="https://svn.boost.org/trac10/changeset/65060" title="Fusion: documentation fixes">[65060]</a> </p> Ticket