https://svn.boost.org/trac10/ticket/11780 <p> C++14 introduced<a class="changeset" href="https://svn.boost.org/trac10/changeset/1" title="Import core sources for SVNmanger 0.38 ">[1]</a> "transparent comparators" that allow looking things up in associative containers without necessarily constructing a key object. It would be nice to have them in boost::container::[flat_]{map,set}. </p> <p> <a class="changeset" href="https://svn.boost.org/trac10/changeset/1" title="Import core sources for SVNmanger 0.38 ">[1]</a>: <a class="ext-link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3657.htm"><span class="icon">​</span>http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3657.htm</a> </p> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/11780 Trac 1.4.3 Ion Gaztañaga Tue, 01 May 2018 13:00:57 GMT https://svn.boost.org/trac10/ticket/11780#comment:1 https://svn.boost.org/trac10/ticket/11780#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> </ul> <p> Better late than never. Commit: </p> <p> <a class="ext-link" href="https://github.com/boostorg/container/commit/48c21e3187cd95b42803efe297842b52c896090e"><span class="icon">​</span>https://github.com/boostorg/container/commit/48c21e3187cd95b42803efe297842b52c896090e</a> </p> <p> Many thanks for the report. </p> Ticket