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.