Martin wrote:
I can't get the singleton to work with VC70.
The error message is
\boost\singleton\creators.hpp(171): error C2504: 'boost::singleton::detail::longevity_registry<Unused>' : base class undefined with [ Unused=void ]
My code looks like:
struct manipidx { manipidx() : idx(std::ios_base::xalloc()) { } int idx; };
typedef basic_singleton<manipidx> tmanipidx; int main() { std::cout << tmanipidx::pointer()->idx << std::endl; }
What I'm trying to do is to create a global variable that can be used in all instanses of a template and at the same time avoid the need for a .cpp file.
That's really strange, what you are trying to do should work. I think there are computer labs at school which have VC70, I'll test your code out there later today and see if I can't get it fixed. In the mean time, have you tried using the singleton as a base class rather than a typedef? struct manipidx : boost::basic_singleton <manipidx> { manipidx() : idx(std::ios_base::xalloc()) { } int idx; }; int main() { std::cout << manipidx::pointer()->idx << std::endl; } -Jason