int main() {
std::vector<int> vec {1,2,3,4,5,6,7,8,9};
for (auto v : powerset(vec)) {
for (auto i : v) std::cout << i << " ";
std::cout << std::endl;
}
std::cout << "with temporary\n";
for (auto v : powerset(std::vector<int>{1,2,3})) {
for (auto i : v) std::cout << i << " ";
std::cout << std::endl;
}
std::cout << "with initializer_list\n";
for (auto v : powerset({1,2,3})) {
for (auto i : v) std::cout << i << " ";
std::cout << std::endl;
}
#if 0
#endif
return 0;
}
