How to identify types in boost fusion vector
boost, boost-fusion, c++
Solution
In order to extract an element from a `boost::fusion::vector` you need to use `boost::fusion::at_c`, like this:
boost::fusion::vector<int, std::string> v(1, "hello");
std::cout << boost::fusion::at_c<0>(v) << std::endl; // prints 1
The type at position N is:
boost::fusion::result_of::at_c<boost::fusion::vector<int, std::string>, 1>::type
Problem
How would one go about identifying the types inside a boost::fusion vector? e.g. ``` fusion::vector<int, double, string> v; ``` then something that would let me identify `v[0]` as being type `int`, `v[1]` as type `double` and `v[2]` as type `string`. Thanks.