type 'a t = 'a * 'a list [@@deriving show]
val to_list : 'a t -> 'a list
val of_list : 'a list -> 'a t option
val of_list_exn : 'a list -> 'a t
val one : 'a -> 'a t
val cons : 'a -> 'a t -> 'a t
val mem : equal:('a -> 'a -> bool) -> 'a -> 'a t -> bool
val for_all : ('a -> bool) -> 'a t -> bool
val exists : ('a -> bool) -> 'a t -> bool
val iter : ('a -> unit) -> 'a t -> unit
val map : ('a -> 'b) -> 'a t -> 'b t
val ( >>| ) : 'a t -> ('a -> 'b) -> 'b t
val ident_map : ('a -> 'a) -> 'a t -> 'a t
val concat : 'a t t -> 'a t
val map_concat : ('a -> 'b t) -> 'a t -> 'b t
val ( >>= ) : 'a t -> ('a -> 'b t) -> 'b t
val rev : 'a t -> 'a t
val rev_map : ('a -> 'b) -> 'a t -> 'b t
val rev_append : 'a t -> 'a t -> 'a t
val append : 'a t -> 'a t -> 'a t
val length : 'a t -> int
val fold_left : ('a -> 'b -> 'a) -> 'a -> 'b t -> 'a
val hd : 'a t -> 'a
val tl : 'a t -> 'a list
val nth : 'a t -> int -> 'a
val dedup : ?compare:('a -> 'a -> int) -> 'a t -> 'a t
val result_all : ('a, 'b) result t -> ('a t, 'b) result
val cat_maybes : 'a option t -> 'a t option