X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=components%2Fextlib%2FhExtlib.mli;h=8de41f6837df4a067bab010438a8731a81d35b88;hb=31d3422a07ed889dff7bda3a28884caff30cba07;hp=a38b09334c7d2cb677c4e673d911f73441015443;hpb=63ac9d7bc2ea4690c50dfb7e6648db4698a9fe72;p=helm.git

diff --git a/components/extlib/hExtlib.mli b/components/extlib/hExtlib.mli
index a38b09334..8de41f683 100644
--- a/components/extlib/hExtlib.mli
+++ b/components/extlib/hExtlib.mli
@@ -40,7 +40,6 @@ 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 *)
 val find: ?test:(string -> bool) -> string -> string list 
@@ -80,6 +79,12 @@ 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
 
+  (** 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
+
 (** {2 Debugging & Profiling} *)
 
 type profiler = { profile : 'a 'b. ('a -> 'b) -> 'a -> 'b }