Objective Caml version 3.04+15 (2002-06-18)

#   * * *       #   type 'a t = { t : 'a; } 
# type 'a fold = { fold : 'b. f:('b -> 'a -> 'b) -> init:'b -> 'b; } 
# val f : 'a list -> 'a fold = <fun>
# - : int = 6
#               class ['a] ilist :
  'a list ->
  object ('b)
    val l : 'a list
    method add : 'a -> 'b
    method fold : f:('c -> 'a -> 'c) -> init:'c -> 'c
  end
#         class virtual ['a] vlist :
  object ('b)
    method virtual add : 'a -> 'b
    method virtual fold : f:('c -> 'a -> 'c) -> init:'c -> 'c
  end
#             class ilist2 :
  int list ->
  object ('a)
    val l : int list
    method add : int -> 'a
    method fold : f:('b -> int -> 'b) -> init:'b -> 'b
  end
#             class ['a] ilist3 :
  'a list ->
  object ('b)
    val l : 'a list
    method add : 'a -> 'b
    method fold : f:('c -> 'a -> 'c) -> init:'c -> 'c
  end
#               class ['a] ilist4 :
  'a list ->
  object ('b)
    val l : 'a list
    method add : 'a -> 'b
    method fold : f:('c -> 'a -> 'c) -> init:'c -> 'c
  end
#                 class ['a] ilist5 :
  'a list ->
  object ('b)
    val l : 'a list
    method add : 'a -> 'b
    method fold : f:('c -> 'a -> 'c) -> init:'c -> 'c
    method fold2 : f:('d -> 'a -> 'd) -> init:'d -> 'd
  end
#                 class ['a] ilist6 :
  'a list ->
  object ('b)
    val l : 'a list
    method add : 'a -> 'b
    method fold : f:('c -> 'a -> 'c) -> init:'c -> 'c
    method fold2 : f:('d -> 'a -> 'd) -> init:'d -> 'd
  end
#       class virtual ['a] olist :
  object method virtual fold : f:('a -> 'b -> 'b) -> init:'b -> 'b end
#         class ['a] onil :
  object method fold : f:('a -> 'b -> 'b) -> init:'b -> 'b end
#             class ['a] ocons :
  hd:'a ->
  tl:'a olist ->
  object
    val hd : 'a
    val tl : 'a olist
    method fold : f:('a -> 'b -> 'b) -> init:'b -> 'b
  end
#               class ['a] ostream :
  hd:'a ->
  tl:'a ostream ->
  object
    val hd : 'a
    val tl : < empty : bool; fold : 'b. f:('a -> 'b -> 'b) -> init:'b -> 'b >
    method empty : bool
    method fold : f:('a -> 'c -> 'c) -> init:'c -> 'c
  end
#                   class ['a] ostream1 :
  hd:'a ->
  tl:'b ->
  object ('b)
    val hd : 'a
    val tl : 'b
    method fold : f:('a -> 'c -> 'c) -> init:'c -> 'c
    method hd : 'a
    method tl : 'b
  end
#           class vari : object method m : [< `A | `B | `C] -> int end
#       class vari : object method m : [< `A | `B | `C] -> int end
#           module V : sig type v = [ `A | `B | `C] val m : [< v] -> int end
#         class varj : object method m : [< V.v] -> int end
#         module type T =
  sig class vari : object method m : [< `A | `B | `C] -> int end end
#             module M0 :
  sig class vari : object method m : [< `A | `B | `C] -> int end end
#   module M : T
# val v : M.vari = <obj>
# - : int = 1
#               class point :
  x:int ->
  y:int -> object val x : int val y : int method x : int method y : int end
#           class color_point :
  x:int ->
  y:int ->
  color:string ->
  object
    val color : string
    val x : int
    val y : int
    method color : string
    method x : int
    method y : int
  end
#                   class circle :
  #point ->
  r:int ->
  object val p : point val r : int method distance : #point -> float end
#           val p0 : point = <obj>
val p1 : point = <obj>
val cp : color_point = <obj>
val c : circle = <obj>
val d : float = 11.4536240471
#   val f : < m : 'a. 'a -> 'a > -> < m : 'b. 'b -> 'b > = <fun>
#   Characters 41-42:
This expression has type < m : 'a. 'a -> 'a list > but is here used with type
  < m : 'a. 'a -> 'b >
The universal variable 'a would escape its scope
#           class id : object method id : 'a -> 'a end
#         class type id_spec = object method id : 'a -> 'a end
#       class id_impl : object method id : 'a -> 'a end
#               class a : object method m : bool end
class b : object method id : 'a -> 'a end
#           Characters 72-77:
This method has type 'a -> 'a which is less general than 'b. 'b -> 'a
#         Characters 75-80:
This method has type 'a -> 'a which is less general than 'b. 'b -> 'a
#           Characters 80-85:
This method has type 'a -> 'a which is less general than 'b. 'b -> 'b
#                 Characters 92-159:
This method has type 'a -> 'a which is less general than 'b. 'b -> 'b
#         class c : object method m : 'a -> 'b -> 'a end
#     val f1 : id -> int * bool = <fun>
#   val f2 : id -> int * bool = <fun>
#   Characters 24-28:
This expression has type bool but is here used with type int
#   Characters 27-31:
Warning: This use of a polymorphic method is not principal
Characters 35-39:
Warning: This use of a polymorphic method is not principal
val f4 : id -> int * bool = <fun>
#           class c : object method m : #id -> int * bool end
#             class id2 : object method id : 'a -> 'a method mono : int -> int end
#   val app : int * bool = (1, true)
#   Characters 4-25:
The type abbreviation foo is cyclic
#     class ['a] bar : 'a -> object  end
#   type 'a foo = 'a foo bar
#   - : (< m : 'b. 'b * 'a > as 'a) -> 'c * (< m : 'e. 'e * 'd > as 'd) = <fun>
# - : (< m : 'b. 'a * 'b list > as 'a) ->
    (< m : 'd. 'c * 'd list > as 'c) * 'e list
= <fun>
# val f :
  (< m : 'b. 'a * (< n : 'b; .. > as 'b) > as 'a) ->
  (< m : 'd. 'c * (< n : 'd; .. > as 'd) > as 'c) * (< n : 'e; .. > as 'e) =
  <fun>
#   - : (< p : 'b. < m : 'b; n : 'a; .. > as 'b > as 'a) ->
    (< m : 'c; n : < p : 'e. < m : 'e; n : 'd; .. > as 'e > as 'd; .. > as 'c)
= <fun>
#   type sum = T of < id : 'a. 'a -> 'a >
# - : sum -> 'a -> 'a = <fun>
#   type record = { r : < id : 'a. 'a -> 'a >; } 
# - : record -> 'a -> 'a = <fun>
# - : record -> 'a -> 'a = <fun>
#       class myself : object ('a) method self : 'b -> 'a end
#                       class number :
  object ('a)
    val num : int
    method num : int
    method prev : 'a
    method succ : 'a
    method switch : zero:(unit -> 'b) -> prev:('a -> 'b) -> 'b
  end
#     val id : 'a -> 'a = <fun>
#       class c : object method id : 'a -> 'a end
#         class c' : object method id : 'a -> 'a end
#               class d :
  object
    val mutable count : int
    method count : int
    method id : 'a -> 'a
    method old : 'b -> 'b
  end
#             class ['a] olist :
  'a list ->
  object ('b)
    val l : 'a list
    method cons : 'a -> 'b
    method fold : f:('a -> 'c -> 'c) -> init:'c -> 'c
  end
#   val sum : int #olist -> int = <fun>
#   val count : 'a #olist -> int = <fun>
#     val append : 'a #olist -> ('a #olist as 'b) -> 'b = <fun>
#     type 'a t = unit
#   class o : object method x : [> `A] t -> unit end
#   class c : object method m : d end
class d : ?x:int -> unit -> object  end
# class d : ?x:int -> unit -> object  end
class c : object method m : d end
#           class type numeral = object method fold : ('a -> 'a) -> 'a -> 'a end
class zero : object method fold : ('a -> 'a) -> 'a -> 'a end
class next : #numeral -> object method fold : ('a -> 'a) -> 'a -> 'a end
#