[boost] Re: [optional] new assignmet semantic and references

Fernando Cacciola wrote:

If I change the code now to use T's operator=(), assignment of optional<T&> will have a _radically_ different semantics. A correct one, that's for sure, but end user code might be fundamentally impacted.

Maybe boost::reference_wrapper can be used internally to wrap reference types and solve this issue. Regards, Joao