David Abrahams wrote: [snip] > BTW, I just realized that a conversion from variant<T> to optional<T> > could be used to do extraction as well. Maybe it would be better to > ditch extract altogether and just use optional?
I had thought about this before, but I dismissed it (perhaps too quickly) because I do not believe optional can contain references (i.e., optional<T&>) because references themselves are non-copyable. Perhaps though optional< reference_wrapper<T> > could be returned? Thoughts? Eric _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
