Re: [Boost-users] [fusion] probably a bug in result_of::join

Christopher Schmidt writes:

Yeah, this is a major issue of the current fusion implementation. The result_of::-metafunctions do not regard that the actual functions take const-qualified arguments only. On top of that the documentation is outdated and misleading.

Well you could make functions, metafunctions and doc agree like this: namespace result_of { template struct join { typedef joint_view< typename add_const<LhSequence>::type, typename add_const<RhSequence>::type > type; }; }

My C++0x port of fusion introduces non-const arguments for the algorithm functions and a new result_of::-concept which allows passing (optionally) cv and ref qualified types.

Do you plan to support that in the version for the "old" compilers as well? J-L