currently there is no simple way to make compile-time var to exist at run-time.
some attempt has been taken place to enhance the compiler capability by enabling _all_ compile-time var exist at run-time. But that solution is not optimal, because not everyone want _all_ compile-time var also exist at run-time. The idea to introduce new pragma to annotate compile-time var was rejected by araq. He said, the compiler must be smart enough to identify which compile-time var need to exist at run-time without introducing new pragma. therefore, we need to make the compiler smarter. the compiler should be able to know which compile-time var accessed at both compile-time and run-time, and which one is accessed only at compile-time. the compiler then generate run-time code for the former and generate nothing for the latter.
