gistfile1.txt

    role LoL {
        method AT-POS() {...}
        method head() {...}
        method tail() {...}
    }

    role HoH {
        method AT-KEY() {...}
    }

    class CSV does Table {
        method header { self[0,*] }
        method row-names { self.header } # Not sure if `--> List` or `--> Array`

        method body { self[1..*,*] }

        method AT-KEY(Str:D() $key) { selt[1..*, self.row-names.first($key, :k)] }
    }