From http://dlang.org/attribute.html"Private means that only members of the enclosing class can access the member, or members and functions in the same module as the enclosing class."
It appears my original code works, opApply being private. However, I was doing my tests with a unittest block in the same module. Do people commonly use a designated module for these types of unittests? Or does D have a way of isolating a unittest from the module it is declared in?
