val rev : t -> t
val rev_map : (elt -> elt) -> t -> t
val length : t -> int
+
+ val with_id : Uid.t -> t
end
module Make ( H : Hcons.SA ) : S with type elt = H.t =
let rev l = fold cons l nil
let rev_map f l = fold (fun x acc -> cons (f x) acc) l nil
let length l = fold (fun _ c -> c+1) l 0
+
+
+ let with_id = Node.with_id
end