@rdearman, if you are interested in implementing an OO data structure like a class, you can see my implementation progression with different basic data structures starting with the discussison of an abstract data type moving to the abstract peg list and finally the abstract story. I’ve taught OO principles enough to see where the overlap is but a solution has never been put forward except me here on the forum and in more detail in my books.
I haven’t had any feedback from Joe but this kind of complex data structure is very useful because it solves a common complex real life problem. The most recent implementation of this OO style structure was with car “objects” needing repairs.
Doug