C++ ranges action::join

vector<vector<int> > v = {
    {1, 2, 3, 4, 5},
    {6, 7, 8, 9, 0}
};

복사

     auto flatCopy = v | ranges::copy | action::join;
    
    cout << view::all(flatMove) << endl;

이동

    auto flatMove = v | ranges::move | action::join;
   
    cout << view::all(flatMove) << endl;

문자열도 가능 

    vector<std::string> strs = {"show","me","the","money"};
    
    std::string flatCopy = strs | ranges::copy | action::join;
    
    cout << view::all(flatCopy) << endl;