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

From: David Abrahams (dave_at_[hidden])
Date: 2006-11-02 12:45:51

"Terry G" <tjgolubi_at_[hidden]> writes:

> I've just finished reading C++ Template Metaprogramming again.
> I just don't get it.
>
> Why would someone use a type container?
>
> I have used enable_if, along with some of the logic functions for managing 
> an overload set.
> Otherwise, I'm clueless.
>
> I'd really like a reference to an MPL primer or some case studies.

The book contains a case study in which type sequences are used to
describe the rows of a state machine's transition table.  Was that not
a sufficient motivating case?  

> Too much pain with very little gain.  

What, specifically, do you find painful?

> Time to ask for help.
> Rereading this, it sounds negative.
> Really, I think the MPL is really cool!

Cool; how can we help?

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com