cppfx - cpp/c++, b2 build

#include <utxcpp/core.hpp>
#include <numeric>
#include <span>
#include <vector>
#include <array>

int main()
{
        std::vector<utx::i32> vector(1000);
        std::span<utx::i32> span{vector};
        std::iota(span.begin(), span.end(), 0);

        std::span<utx::i32> span2{vector.begin()+10, 15};

        std::array<utx::i32, 15> array;
        std::span<utx::i32> span3{array};

        std::copy(span2.begin(), span2.end(), span3.begin());
        utx::print_all(array, span3);
/*
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
*/
}