Understanding a new C++ feature. How the cycle eventually is. (computerprogrammingstuff.blogspot.com.br)

I just went through this cycle. I updated a 2005-era codebase to use auto to declare most iterators:

  for (auto it = foo.begin(); ...

That was pleasant and easy. Then I got all excited about std::atomic and tried using that in place of my own portable implementation, but it didn't work on OSX so I had to roll back.