Re: [Boost-users] Sequence of Types, What For?

From: Arkadiy Vertleyb (vertleyb_at_[hidden])
Date: 2006-10-17 13:32:58

"Terry G" <tjgolubi_at_[hidden]> wrote

> I've just finished reading C++ Template Metaprogramming again.
> I just don't get it.

Should probably not be your first book on template metaprogramming.  Really, 
it's just like trying to learn STL without any idea what a template is.

> Why would someone use a type container?

For example, one could implement a generic tuple class (although I don't 
think boost::tuple uses this approach, but probably fusion does?).  Also see 
below...

> I'd really like a reference to an MPL primer or some case studies.

IMO, you should really start with template metaprogramming itself, and then 
move to MPL.  Try Alexandrescu's "Modern C++ design" -- it also contains a 
lot of examples why you would want to use a typelist.  Once you have a basic 
understanding of template metaprogramming, get back to the MPL book -- it's 
worth it.

Regards,
Arkadiy