Steven Watanabe wrote:

AMDG

Joel de Guzman wrote:

...

Steven Watanabe wrote:

...

Also, one thing that needs to be nailed down is: What Is I? Tobias was using it as the index into the list of labels: mpl::int_<0>, mpl::int_<1>, mpl::int_<2>, ... In my original interface and as you seem to be using it I is one of: mpl::at_c<labels, 0>::type, mpl::at_c<labels, 1>::type, mpl::at_c<labels, 2>::type

It's in the concept I presented:

I An MPL Integral Constant type

Here:

http://boost.org/libs/mpl/doc/refmanual/integral-constant.html

Anything special I am missing?

What I meant was where they come from and thus how they should be interpreted. If you have mpl::vector_c<int, 4,2, 7> do you get mpl::int_<0>, mpl::int_<1>, and mpl::int_<2> or mpl::int_<4>, mpl::int_<2>, and mpl::int_<7>?

The latter. Regards, -- Joel de Guzman http://www.boost-consulting.com http://spirit.sf.net