Comment by rphln

Often I wish that:

    enum Auth { Guest, User(u32), Bot(u32) }

was just syntactic sugar for

    struct Auth::Guest;
    struct Auth::User(u32);
    struct Auth::Bot(u32);

    type Auth = Auth::Guest | Auth::User | Auth::Bot;

where `|` denotes an anonymous union. Using enums feel very clunky when you start needing to work with subsets of them.