gistfile1.cpp

void unique(std::vector<std::string>&& ss)
{
    ss.resize(std::distance(ss.begin(),
                            std::unique(ss.begin(), ss.end())));
    for (auto& s : ss) std::cout << s << "\n";
}

std::vector<std::string> read_all_lines(std::istream& istr)
{
    std::vector<std::string> temp;
    std::string buffer;
    while (std::getline(istr, buffer, '\n'))
    {
        temp.emplace_back(std::move(buffer));
    }
    return std::move(temp);
}