Re: [boost] Re: Singleton Documentation Complete

From: Jason Hise (chaos_at_[hidden])
Date: 2005-03-04 10:02:24

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