how-to-create-and-use-shared-ptr-instances_3.cpp

    vector<shared_ptr<Song>> v {
      make_shared<Song>(L"Bob Dylan", L"The Times They Are A Changing"),
      make_shared<Song>(L"Aretha Franklin", L"Bridge Over Troubled Water"),
      make_shared<Song>(L"Thalía", L"Entre El Mar y Una Estrella")
    };

    vector<shared_ptr<Song>> v2;
    remove_copy_if(v.begin(), v.end(), back_inserter(v2), [] (shared_ptr<Song> s) 
    {
        return s->artist.compare(L"Bob Dylan") == 0;
    });

    for (const auto& s : v2)
    {
        wcout << s->artist << L":" << s->title << endl;
    }