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

Full program:

#include 
#include 

void process(int ii)
{
   std::cout << " " << ii;
}

int main(void)
{
   std::list ll;

   ll.push_back(1);
   ll.push_back(2);
   ll.push_back(3);
   ll.push_back(4);
   ll.push_back(5);
   ll.push_back(6);

   std::list::iterator iter = ll.begin();
   if (iter != ll.end())
   {
      std::list::iterator lastIter = iter;
      ++ iter;
      while (iter != ll.end())
      {
         process(*lastIter);
         lastIter = iter;
         ++ iter;
      }
      // todo: think if you need to process *lastIter
      std::cout << " | last:";
      process(*lastIter);
   }

   std::cout << std::endl;

   return 0;
}

This program yields:

 1 2 3 4 5 | last: 6