Using an STL list with current and next iterators
General algorithm for using a “current” and a “next” iterator on an STL list, which doesn’t provide a convenient next() method (random-access containers such as vector do):
std::list<Foo>::iterator currIter, nextIter;
currIter = list.begin();
while(currIter != list.end()) { currIter->doStuff(); // do something with the curr item
nextIter = ++currIter; //advance the iter and set it to next
if(nextIter != list.end()) // still safe to use next item
{
nextIter->doStuff(); // do something with the next item
}
}