You can use boost::function to make it possible using different types of callable objects as the function's input.
I assume you want to improve the functionality of PassPtr, rather than all of the sample code you gave. If you are using C++11 and can use lambda expressions, I would simplify it to just.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.