Re: [boost] [optional] rebinding references

From: Joel de Guzman (joel_at_[hidden])
Date: 2005-10-18 17:27:06

Yuval Ronen wrote:

>>// (3) Sam's proposal:
>>o = make_optional(rb); // Clearly rebinds, doesn't it?
>>
>>// I just introduced make_optional() here to get rid of the template 
>>argument
> 
> 
> Oh, this is much better than the
> 
> o = optional<int&>(rb)
> 
> I just voted againts, but is it feasible? Can make_optional() know if it 
> should make an optional<T> or optional<T&>? Perhaps a way can be found, 
> but I'm not sure of it.

It would be:

    o = optional_tie(rb);

for references. Following tuple's "tie".

Regards,
-- 
Joel de Guzman
http://www.boost-consulting.com
http://spirit.sf.net