Have you checked out the loki library on SourceForge? It has a singleton implementation along the lines you are trying implement. If you have not read this paper about multi-threaded singletons, I suggest you do. http://erdani.org/publications/DDJ_Jul_Aug_2004_revised.pdf Dave -----Original Message----- From: Jason Hise [mailto:chaos@ezequal.com] Sent: Thursday, July 28, 2005 3:17 PM To: boost@lists.boost.org Subject: Re: [boost] singleton design plan Michael Goldshteyn wrote:

What is:

namespace boost { const class {

???

const class { ... } null; Defines a global variable named null, which is constant and of an unnamed type defined by the class declaration. I think this is standards conforming, but now that you mention it I'm not positive. I will have to check with other compilers to make sure. -Jason _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost