Hi, > typedefs and template parameters are not allowed to be friends. 14.5.3 > describes the constructs allowed in a friend declaration in a > class template, and typedefs and template parameters are not > amoung them. but it's working with typedef's can anybody explain need of this? > I think this is unfortunate, but it's rare to need this feature. it would be ok, if i can replace it by something else Thanks.