Hi Christopher, Am 2012-08-09 12:47, schrieb Hite, Christopher:
I was just (re-)reading item 46, "Define non-member functions inside templates when type conversions are desired", in Scott Meyers "Effective C++, 3rd edition", and was wondering how and why the comparison operators for intrusive_ptr work when used with NULL, even though they're > not friend functions as described in Scott Meyer's item 46. I believe you're talking about the ancient technique of friend injection used here for example: http://en.wikipedia.org/wiki/Barton%E2%80%93Nackman_trick
The modern good way of doing this Koenig lookup which I think deprecates that trick. http://en.wikipedia.org/wiki/Argument-dependent_name_lookup
Thank you very much for your reply! I still have to experiment and compare and check my code, but the linked articles and their references help a lot! Thanks! Best regards, Carsten -- Cafu - the open-source Game and Graphics Engine for multiplayer, cross-platform, real-time 3D Action Learn more at http://www.cafu.de