How can I detect the last iteration in a loop over std::map?

Question

I\'m trying to figure out the best way to determine whether I\'m in the last iteration of a loop over a map in order to do something like the following:

for          


        

Answer 1

Since C++11, you can also use std::next()

   for (auto iter = someMap.begin(); iter != someMap.end(); ++iter) { 
        // do something for all iterations
        if (std::next(iter) != someMap.end()) {
            // do something for all but the last iteration
        }
    }

Although the question was asked a while ago, I thought it would be worth sharing.