Re: [boost] Visual Studio 7.0 singleton issues

From: Jason Hise (chaos_at_[hidden])
Date: 2005-03-04 22:24:04

Jason Hise wrote:

> The singleton library does not work on VC70, and I am having 
> difficulty figuring out a work-around.  Below, I have written a 
> stripped down version of the singleton hierarchy which demonstrates 
> the problem.  Can someone more familiar with VC70 think of a way to 
> make the code compile?  I suspect I need an extra level of indirection 
> somewhere, but I'm not sure quite where to put it.  Thanks in advance.
>
> template < typename Type >
> struct creator
> {
>    struct creatable : public Type  // --- ERROR HERE, SAYS TYPE IS NOT 
> YET DEFINED ---
>    {
>    };
> };
>
> template < typename Type >
> struct lifetime
> {
>    creator < Type > my_creator;
>
>    struct pointer
>    {
>    };
> };
>
> template < typename Type >
> struct singleton
> {
>    struct pointer : public lifetime < Type >::pointer
>    {
>    };
> };
>
> // client code
> struct client_singleton : public singleton < client_singleton >
> {
> };
>
>
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Excellent news, I think I've found a work-around.  If it works, I'll 
follow up with a new upload.

-Jason