Produce std::tuple of same type in compile time given its length by a template argument

Question

In c++, how can I implement a function with an int template argument indicating the tuple length and produce a std::tuple with that length?

E.g.

func<         


        

Answer 1

Here are two boost.hana solutions (C++14):

//first
hana::replicate(int{}, hana::size_c<2>);

//second
hana::cycle(std::make_tuple(int{}), hana::size_c<2>);

Both produce integer-tuples of size 2, but instead of std::tuples they yield hana::tuples.