[Boost-users] C++ and/or boost analog to .NET System.Version

Hello, I am curious is there an analog to System.Version in .NET? http://msdn.microsoft.com/en-us/library/system.version.aspx Basically a cloneable, comparable, equatable version composed of major, minor, build, revision. Or patch, build, or however you'd like to decompose the fields. I don't think it'd be hard to cook one up using say tuple for instance, but if one already exists I'd like to save the effort. Thanks! Regards, Michael Powell