[boost] [fusion] transform into vector

Hi, (Now my question was simplified.) How can a sequence object be transformed into fusion::vector object, keeping mutability of elements? For example, When at_c return type Sequence of input is: int&, char, double const&, ... , a type Sequence I need is: fusion::vector<result_of<F(int&)>::type, result_of<F(char)>::type, result_of<F(double const&)>::type, ...> Note that the output I need is not a fusion::transform_view but a fusion::vector. as_vector doens't work, because as_vector makes use of value_of. Am I missing some predefined function? Regards, -- Shunsuke Sogame