val mkdir: string -> unit (** create dir and parents. @raise Failure *)
val tilde_expand: string -> string (** bash-like (head) tilde expansion *)
val safe_remove: string -> unit (** removes a file if it exists *)
val safe_rmdir: string -> unit (** removes a dir if it exists and is empty *)
val is_dir_empty: string -> bool (** checks if the dir is empty *)
val rmdir_descend: string -> unit (** rmdir -p *)
val mkdir: string -> unit (** create dir and parents. @raise Failure *)
val tilde_expand: string -> string (** bash-like (head) tilde expansion *)
val safe_remove: string -> unit (** removes a file if it exists *)
val safe_rmdir: string -> unit (** removes a dir if it exists and is empty *)
val is_dir_empty: string -> bool (** checks if the dir is empty *)
val rmdir_descend: string -> unit (** rmdir -p *)
(** find all _files_ whose name matches test under a filesystem root.
* Test is passed the filename path relative to the given filesystem root *)
(** find all _files_ whose name matches test under a filesystem root.
* Test is passed the filename path relative to the given filesystem root *)
val list_uniq:
?eq:('a->'a->bool) -> 'a list -> 'a list (** uniq unix filter on lists *)
val filter_map: ('a -> 'b option) -> 'a list -> 'b list (** filter + map *)
val list_uniq:
?eq:('a->'a->bool) -> 'a list -> 'a list (** uniq unix filter on lists *)
val filter_map: ('a -> 'b option) -> 'a list -> 'b list (** filter + map *)
val list_concat: ?sep:'a list -> 'a list list -> 'a list (**String.concat-like*)
val list_findopt: ('a -> 'b option) -> 'a list -> 'b option
val flatten_map: ('a -> 'b list) -> 'a list -> 'b list
val list_concat: ?sep:'a list -> 'a list list -> 'a list (**String.concat-like*)
val list_findopt: ('a -> 'b option) -> 'a list -> 'b option
val flatten_map: ('a -> 'b list) -> 'a list -> 'b list
+val list_last: 'a list -> 'a
+
+ (** split_nth n l
+ * @returns two list, the first contains at least n elements, the second the
+ * remaining one
+ * @raise Failure when List.length l < n *)
+val split_nth: int -> 'a list -> 'a list * 'a list