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

From: Fernando Cacciola (fernando_cacciola_at_[hidden])
Date: 2005-03-01 12:25:34

"Joao Abecasis" <jpabecasis_at_[hidden]> escribió en el mensaje 
news:42249F77.7080402_at_zmail.pt...
> 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.
>
How?

We're not talking about an implementation problem here; this is about the 
"correct" behaviour and whether is ok to change to it given the potential 
impact on user programs.

Fernando Cacciola