https://issues.dlang.org/show_bug.cgi?id=12957
--- Comment #2 from bearophile_h...@eml.cc --- (In reply to hsteoh from comment #1) > Yeah, we need to rethink the implementation of cartesianProduct; currently, > it produces an exponential number of template instantiations with the number > of arguments, which is not scalable at all. :-( We have also to change the order of the output, and probably more. So I think it will need to be rewritten. --