iter_move(std::common_iterator)

#include <iomanip>
#include <iostream>
#include <iterator>
#include <string>
#include <vector>
 
void print(auto const& rem, auto const& v)
{
 std::cout << rem << '[' << size(v) << "] { ";
 for (int o{}; auto const& s : v)
 std::cout << (o++ ? ", " : "") << std::quoted (s);
 std::cout << " }\n";
}
 
int main()
{
 std::vector <std::string > p{"Andromeda", "Cassiopeia", "Phoenix"}, q;
 print("p", p);
 print("q", q);
 
 using CTI = std::counted_iterator <std::vector <std::string >::iterator>;
 using CI = std::common_iterator <CTI, std::default_sentinel_t >;
 CI last{std::default_sentinel };
 
 for (CI first{{p.begin(), 2}}; first != last; ++first)
 q.emplace_back(/* ADL */ iter_move(first));
 
 print("p", p);
 print("q", q);
}

p[3] { "Andromeda", "Cassiopeia", "Phoenix" }
q[0] { }
p[3] { "", "", "Phoenix" }
q[2] { "Andromeda", "Cassiopeia" }