Still plenty missing, delegate a'la macOS/iOS, singleton/global/envs, explicit parameters/context object, multimethods a'la clojure/miltiple dispatch a'la julia

Still plenty missing, delegate a'la macOS/iOS, singleton/global/envs, explicit parameters/context object, multimethods a'la clojure/miltiple dispatch a'la julia, functors a'la ocaml, plugins/convention-based-autoloading, even monkey patching a'la RoR/active-stuff-style if a form of configruation/inversion of control, probably more.