AMDG Hicham Mouline wrote:

hi, in an ealier post, i was helped to write explicit template instantiations as:

#define FINH1 (EC)(EP)(AC)(AP) #define FINH2 (C)(D)(E)(F)(G) #define FINH3 (2)(3) #define M(r, product) template class Tree<BOOST_PP_SEQ_ENUM(product)>; BOOST_PP_SEQ_FOR_EACH_PRODUCT(M, (FINH1)(FINH2)(FINH3))

That nicely generated: template class Tree<EC,C,2>; template class Tree<EC,C,3>; template class Tree<EC,D,2>; template class Tree<EC,D,3>; ...

what i need now is coupling FINH2 and FINH3 (i don't want their crossproduct) as in: #define FINH1 (EC)(EP)(AC)(AP) #define FINH2 (C,2)(D,2)(E,3)(F,3)(G,3)

#define M(r, product) template class Tree<BOOST_PP_SEQ_ENUM(product)>; BOOST_PP_SEQ_FOR_EACH_PRODUCT(M, (FINH1)(FINH2))

But that does't work because the commas in FINH2 are taken as macro arguments which fails...

#include <boost/preprocessor/seq/for_each_product.hpp> #include <boost/preprocessor/seq/enum.hpp> #include <boost/preprocessor/seq/for_each.hpp> #include <boost/preprocessor/seq/elem.hpp> #define FINH1 (EC)(EP)(AC)(AP) #define FINH2 ((C)(2))((D)(2))((E)(3))((F)(3))((G)(3)) #define M(r, product) template class Tree<BOOST_PP_SEQ_ELEM(0, product), BOOST_PP_SEQ_ENUM(BOOST_PP_SEQ_ELEM(1, product))>; BOOST_PP_SEQ_FOR_EACH_PRODUCT(M, (FINH1)(FINH2)) In Christ, Steven Watanabe