Re: [boost] If boost::fusion is the hammer, then what's the nail?

From: Weapon Liu (weapon.liu_at_[hidden])
Date: 2006-12-15 03:33:02

Larry Evans wrote:
> On 12/14/2006 06:36 AM, Weapon Liu wrote:
>   
>> And by the bye, that it can be used to build a handy pseudo-struct  that 
>> enables full introspection really is a good and fancy feature. However, 
>> there's something fundamentally irremediable of it, that is, it can't be 
>> used to build a full-fledged class( rather than a POD-struct), which, I 
>> think, will too reduce its usefulness w.r.t. this kinda situations.
>>     
>
> I think a "full fledged class" (a.k.a. FFC) can be done with mpl::fold 
> and CRTP.  Each method can be in a separate class, and each field may be 
> in another class.  By inheriting each of these separate classes
> (actually template classes where 1 template arg is the most derived 
> class, thus making the pattern an instance of CRTP) with mpl's inherit 
> linearly, you've inherited both the data members and the methods, and 
> the CRTP allows any method to call any other method, whether that method
> is above or below it in the inheritance heirarchy. I tried this once
> with an earlier version of the proto_static_disp.cpp in boost value 
> under Home/Strings - Text Processing, but I found it wasn't needed; so,
> I removed it.  I could retrive the earlier version if you want to have a 
> look.
>
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>   
I'm really intrigued, Larry :-)
So, please.
BTW. How do we handle the accessibility?