title: C++11 styled callbacks?
body: <p>I have a void function inside of a class. In old C++ i'd make a function static taking the class name as a parameter and had my own class which took a static void function + a void* for me to easily call it.</p>
  
  <p>However that feels old school. It also isn't templated which feels like i could be doing more. What is a more modern way of creating callbacks to myclassVar.voidReturnVoidParamFunc</p>