C arrays are basically that. Also python dicts (most python types including all user-defined classes are actually dicts underneath), Lua tables, Javascript obje

C arrays are basically that. Also python dicts (most python types including all user-defined classes are actually dicts underneath), Lua tables, Javascript objects, and more. In most dynamically typed languages, "the" type is actually what you're calling a hyper-collection and not just conceptually, but also in implementation