Admittedly I read this pretty quickly, but this is just structs. The "behaviours" being modelled here were data access. Writing .name() instead of .name. You

Admittedly I read this pretty quickly, but this is just structs. The "behaviours" being modelled here were data access. Writing .name() instead of .name. You can save yourself the time of manually packing these structs by writing out a constructor in full. Which the article called "automatic". (You don't even need to write out the constructor for a struct in C99. Probably any other modern language too)