Roy Osherove found another .NET Set implementation
Add Support for "Set" Collections to .NET: "One of the missing collection classes in .Net is one that's not as often used, but when you need it, boy, it's really missing, is the Set. You know - Set theory ('Group Theory') and all, including Intesect, join and so on.
I found this really nice Set implementation library with Source over on CodeProject :
http://www.codeproject.com/csharp/sets.asp "
