[boost] g++ 4.0 and typeof/operator overloading based metaprogramming

From: Daniel James (daniel_at_[hidden])
Date: 2005-01-31 13:22:34

Hello everyone,

I've been trying out a pre-release of g++ 4.0, and its typeof now works 
a lot better than the older versions. This allows it to be used for 
metaprogramming. As an example, I've attached a compile time factorial 
implemented mainly using operator overloads (it's not commented at all, 
but should be pretty easy to understand for most people on this list). I 
think it would be possible to write a metaprogramming library which 
would have much nicer syntax (borrowing techniques from lamba & 
phoenix), and integrate well with mpl.

I suppose that since such a library would only work on gcc for now (or 
do any other compilers have a good enough typeof?), it might not be 
appropriate for boost, but I thought this might be of interest here anyway.

Daniel