I want to cover the C++ STL versions of a couple of containers. STL is the standard
template library, which is shipped with most C++ compilers. The reason why I want to
cover these STL versions is that they behave somewhat differently than the UE4 versions
of the same containers. In some ways, their behavior is very good, but game programmers
often complain of STL having performance issues. In particular, I want to cover STL’s set
and map containers.