Steven Watanabe wrote:
As is, it isn't, because MSVC 2017 can't even include hana.hpp at present, let alone make any use of it.
It took me about 5 minutes to fix that.
The implied argument being that it's better to fix Hana, or at least those parts of it that Yap uses, to compile under MSVC instead? I still don't think it's better to have the user write template <typename Expr1, typename Expr2, typename Expr3> decltype(auto) transform_expression ( boost::yap::expression< boost::yap::expr_kind::plus, boost::hana::tuple< boost::yap::expression< boost::yap::expr_kind::multiplies, boost::hana::tuple< Expr1, Expr2 > >, Expr3 > > const & expr ) instead of template <typename Expr1, typename Expr2, typename Expr3> decltype(auto) transform_expression ( boost::yap::expression< boost::yap::expr_kind::plus, std::tuple< boost::yap::expression< boost::yap::expr_kind::multiplies, std::tuple< Expr1, Expr2 > >, Expr3 > > const & expr ) or template <typename Expr1, typename Expr2, typename Expr3> decltype(auto) transform_expression ( boost::yap::expression< boost::yap::expr_kind::plus, boost::yap::expression< boost::yap::expr_kind::multiplies, Expr1, Expr2 >, Expr3 > const & expr ) but, whatever.