Fascinating. Interestingly enough, my first non-class-related experience with "intrusive lists" was in C, and we implemented it via macros; you'd add a LINKED_

Fascinating. Interestingly enough, my first non-class-related experience with "intrusive lists" was in C, and we implemented it via macros; you'd add a LINKED_LIST macro in the body of a struct definition, and it would unspool into the pointer declarations. Then the list-manipulation functions were also macros so they would unspool at compile time into C code that was type-aware enough to know where the pointers lived in that individual struct. Of course, this meant incurring the cost of a new definition of function families for each intrusive-list structure, but this was in the context of bashing together a demo kernel for a class, so we assumed modern PCs that have more memory than sense. The bigger problem was that C macros are little bastards to debug and maintain (especially a macro'd function... so much escaping). C++, of course, ameliorates almost all those problems. And replaces them with other problems. ;)