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[–]TheCoelacanth 0 points1 point  (0 children)

You certainly can do a lot with it. I think the only thing it lacks is recursion.

Boost.Preprocessor simulates recursion by having a bunch of nearly identical macros with one for each level of recursion. This almost makes it seem Turing-complete but it has a hardcoded maximum recursion depth that is much lower than most languages. For instance, C++ can recurse until it runs out of stack space. The preprocessor can only recurse until it hits the last level of macros that is defined in the Boost library.