[boost] Re: Re: Formal review of "Output Formatters"librarybeginstoday

From: Vladimir Prus (ghost_at_[hidden])
Date: 2004-09-29 05:30:01

Jonathan Turkanis wrote:

>>    template<class>
>>    figure_out_name_offset
>>    {
>>  figure_out_name_offset operator&(nvp& p)
>>         {
>>              if (p.name() == "name")
>>              {
>>                  m_address = &p.value()
>>              }
>>         }
>>         std::string* m_address;
>>    };
>>    Person p;
>>    figure_out_name_offset f;
>>    p.serialize(f);
>>    unsigned offset = (int)f.m_address - (int)&p;
> 
> Does this force the class to represent it's fields as strings? 

The above code -- yes, but I've used std::string for simplicity. I think
it's possible to modify the example in such a way that you won't store an
address of a variable but a formatter*, created from using address of
object, address of &p.value() and depending on type of p.value()

- Volodya