SFINAE makes it possible, and we have something proprietary along these lines here at work. I'd by happy to elaborate more on specific questions if you are interested to know more.
Yes, sounds interestion. While I'm sure that your concerns are valid about this library in its current state, i've found this library to be good enough. It may not be perfect, but its a better rectangle class than any i've seen. I think that we should get it reviewed by others and try to get it added to the main boost cvs. When an improved geometry class comes along, we could add that one to boost as well. Geometry2d is not a complicated library, as it consists of only one header file, and would be easy enough to just add it to the utility folder. Just my thoughts, Tom brinkman __________________________________ Do you Yahoo!? Yahoo! Finance Tax Center - File online. File on time. http://taxes.yahoo.com/filing.html