con stringify = fold (fn nm :: Name => fn u :: Unit => fn t :: {Type} => [nm = string] ++ t) [] signature S = sig con rs :: {Unit} end signature S' = sig con rs :: {Unit} val handler : $(stringify rs) -> page val page : unit -> page end functor F (M : S) : S' where con rs = M.rs = struct con rs = M.rs val handler = fn x : $(stringify M.rs) => OK. val page = fn () => {fold [fn rs :: {Unit} => xml lform [] (stringify rs)] (fn nm :: Name => fn u :: Unit => fn rest :: {Unit} => fn frag : xml lform [] (stringify rest) =>

{frag}

) [rs]} end structure M = F(struct con rs = [A, B, C] end) open M