How to detect if the current element in a set is the last element?

Question

I have a foreach loop that goes though a std::set that looks like

for (auto& line : lines){
    //use line
    bool end = /* Check if line is the last element */
}

With a std::vector I could check &line == &lines.back();

Is there a way I can do something similar for a std::set?

Answer 1

zneak has some pretty good ideas, but here's one involving iterators in the loop:

std::set<std::string> lines;
lines.insert("Hello");
lines.insert("Thar");
lines.insert("How");
lines.insert("Goes");
lines.insert("It");
for (const auto& line : lines) {
    auto it = lines.find(line);
    it++;
    std::cout << std::boolalpha << (it == lines.end()) << std::endl;
}