`sig val init : int -> f:(int -> 'a) -> 'a list val iter : f:('a -> unit) -> 'a list -> unit val iteri : f:(int -> 'a -> unit) -> 'a list -> unit val map : f:('a -> 'b) -> 'a list -> 'b list val mapi : f:(int -> 'a -> 'b) -> 'a list -> 'b list val rev_map : f:('a -> 'b) -> 'a list -> 'b list val fold_left : f:('a -> 'b -> 'a) -> init:'a -> 'b list -> 'a val fold_right : f:('a -> 'b -> 'b) -> 'a list -> init:'b -> 'b val iter2 : f:('a -> 'b -> unit) -> 'a list -> 'b list -> unit val map2 : f:('a -> 'b -> 'c) -> 'a list -> 'b list -> 'c list val rev_map2 : f:('a -> 'b -> 'c) -> 'a list -> 'b list -> 'c list val fold_left2 : f:('a -> 'b -> 'c -> 'a) -> init:'a -> 'b list -> 'c list -> 'a val fold_right2 : f:('a -> 'b -> 'c -> 'c) -> 'a list -> 'b list -> init:'c -> 'c val for_all : f:('a -> bool) -> 'a list -> bool val exists : f:('a -> bool) -> 'a list -> bool val for_all2 : f:('a -> 'b -> bool) -> 'a list -> 'b list -> bool val exists2 : f:('a -> 'b -> bool) -> 'a list -> 'b list -> bool val subset : cmp:('a -> 'b -> int) -> 'a list -> 'b list -> bool val find_exn : f:('a -> bool) -> exn -> 'a list -> 'a val filter : f:('a -> bool) -> 'a list -> 'a list val filter_map : f:('a -> 'b option) -> 'a list -> 'b list val find_all : f:('a -> bool) -> 'a list -> 'a list val partition : f:('a -> bool) -> 'a list -> 'a list * 'a list val remove_if : f:('a -> bool) -> 'a list -> 'a list val take_while : f:('a -> bool) -> 'a list -> 'a list val drop_while : f:('a -> bool) -> 'a list -> 'a list val stable_sort : ?cmp:('a -> 'a -> int) -> 'a list -> 'a list val fast_sort : ?cmp:('a -> 'a -> int) -> 'a list -> 'a list val merge : ?cmp:('a -> 'a -> int) -> 'a list -> 'a list -> 'a list module LExceptionless = BatList.Labels.LExceptionless val find : f:('a -> bool) -> 'a list -> 'a option val rfind : f:('a -> bool) -> 'a list -> 'a option val findi : f:(int -> 'a -> bool) -> 'a list -> (int * 'a) option val split_at : int -> 'a list -> [ `Invalid_argument of string | `Ok of 'a list * 'a list ] val at : 'a list -> int -> [ `Invalid_argument of string | `Ok of 'a ] val assoc : 'a -> ('a * 'b) list -> 'b option val assoc_inv : 'b -> ('a * 'b) list -> 'a option val assq : 'a -> ('a * 'b) list -> 'b option end`