id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
6373,transform_iterator not preserving bidirectionality of std::map iterator,JonT <jon@…>,Dave Abrahams,"Using transform_iterator on std::map iterator does not seem to preserve bidirectionality.

{{{
#!cpp
map::iterator itend = data.end();
XIt xend = boost::make_transform_iterator(itend,xfunc());
XIt xlast = xend;
--xlast;
assert(xend != xlast); // succeeds !
xlast = xend;
std::advance(xlast,-1);
assert(xend != xlast); // fails !
}}}

See also [http://stackoverflow.com/questions/8783048/bidirectional-boost-transform-iterator-as-with-stdmap StackOverflow Issue 8783048] for longer (compilable) example.",Bugs,closed,To Be Determined,iterator,Boost 1.49.0,Problem,wontfix,transform_iterator bidirectional std::map,