Ryan Saunders wrote:
here's an example:
typedef typename meta_func< typename T0::inner_type, typename T1::inner_type, typename T2::inner_type>::type;
I don't see a way to do this with any of the ENUM_XXX macros.
You can do this: #define INNER_TYPE(z, n, data) typename T##n::inner_type typedef typename meta_func< BOOST_PP_ENUM(3, INNER_TYPE, _) >::type; which is more general purpose than supplying a macro for every possibility.
Maybe something like ENUM_SPLIT_PARAMS(COUNT, PREF, SUFF) that would generate PREF ## n ## SUFF?
That wouldn't actually work in this case, since you can't concatenate a number onto a symbol - you probably mean PREF ## n SUFF. If you want this, you can do it yourself: #define ENUM_SPLIT_PARAMS(COUNT, PREF, SUFF) \ BOOST_PP_ENUM(COUNT, ENUM_SPLIT_PARAMS_OP, (PREF, SUFF)) #define ENUM_SPLIT_PARAMS_OP(z, n, data) \ BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM(2, 0, data), n) \ BOOST_PP_TUPLE_ELEM(2, 1, data) Daniel