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

If you just want to use a ForwardIterator, this should work:

for ( i = c.begin(); i != c.end(); ) {
        iterator cur = i++;
        // do something, using cur
        if ( i != c.end() ) {
                // do something using cur for all but the last iteration
        }
}