> > 3. Copy Constructible/Assignable requirements on bounded types > > This only need to be required if variant should have appropriate > > feature. > > I disagree. As-is, every variant object requires CopyConstructible > bounded types, as it is the only way to construct its content. > > Some notes, however. I may be able to eliminate the Assignable > requirement altogether by modifying the implementation of > variant::swap. As well, there has been some discussion about in-place > construction, which could eliminate the CopyConstructible requirement > except in cases of actual variant copying. (This conversation occurred > with regard to optional, but could work with equal applicability to > variant.)
I think it's the way to go. This implementation issue shouldn't affect overall design. It would be a pity if we couldn't use variant for noncopyable types. Gennadiy. _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
