Template tuple - calling a function on each element

Question

My question is in the code:

template
struct TupleOfVectors {
  std::tuple...> tuple;

  void do_something_t         


        

Answer 1

In C++17 you can do this:

std::apply([](auto ...x){std::make_tuple(some_function(x)...);} , the_tuple);

given that some_function has suitable overloads for all the types in the tuple.

This already works in Clang++ 3.9, using std::experimental::apply.