X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fextlib%2FhExtlib.mli;h=f5e3741d44a5e4f082ced3c3e3e3d99448fb8fe1;hb=d35aca0e979a9c7edbc60c44040360d52be8ca82;hp=52e2fbf6078a9bf26bfbb3c4b56347b577fc7512;hpb=2b837ca9e298eb44eee95d9ca0e331c577785dcb;p=helm.git

diff --git a/helm/software/components/extlib/hExtlib.mli b/helm/software/components/extlib/hExtlib.mli
index 52e2fbf60..f5e3741d4 100644
--- a/helm/software/components/extlib/hExtlib.mli
+++ b/helm/software/components/extlib/hExtlib.mli
@@ -84,6 +84,11 @@ val trim_blanks: string -> string (** strip heading and trailing blanks *)
 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 filter_map_acc: ('acc -> 'a -> ('acc * 'b) option) -> 'acc -> 'a list ->
+        'acc * 'b list (** fold/filter + map *)
+val filter_map_monad: ('acc -> 'a -> 'acc * 'b option) -> 'acc -> 'a list ->
+        'acc * 'b list (** fold/filter + map *)
+
 val list_rev_map_filter: ('a -> 'b option) -> 'a list -> 'b list
 val list_rev_map_filter_fold: ('c -> 'a -> 'c * 'b option) -> 'c -> 'a list -> 'c * 'b list
 val list_concat: ?sep:'a list -> 'a list list -> 'a list (**String.concat-like*)
@@ -92,6 +97,8 @@ val list_findopt: ('a -> int -> 'b option) -> 'a list -> 'b option
 val flatten_map: ('a -> 'b list) -> 'a list -> 'b list
 val list_last: 'a list -> 'a
 val list_mapi: ('a -> int -> 'b) -> 'a list -> 'b list
+val list_mapi_acc: 
+      ('a -> int -> 'acc -> 'acc * 'b) -> 'acc -> 'a list -> 'acc * 'b list 
 (* Finds the zero based index of the first element that satisfies a predicate*)
 val list_index: ('a -> bool) -> 'a list -> (int * 'a) option
 val sharing_map: ('a -> 'a) -> 'a list -> 'a list
@@ -99,20 +106,19 @@ val sharing_map: ('a -> 'a) -> 'a list -> 'a list
    The second one can be shorter and is padded with a default value.
    This function cannot fail. *)
 val list_iter_default2: ('a -> 'b -> unit) -> 'a list -> 'b -> 'b list -> unit
+exception FailureAt of int
 (* Checks a predicate in parallel on three lists, the first two having the same
    length (otherwise it raises Invalid_argument). It stops when the first two
-   lists are empty. The third one can be shorter and is padded with a default value. *)
+   lists are empty. The third one can be shorter and is padded with a default
+   value. It can also raise FailureAt when ??? *)
 val list_forall_default3: ('a -> 'b -> 'c -> bool) -> 'a list -> 'b list -> 'c -> 'c list -> bool
 val list_forall_default3_var: ('a -> 'b -> 'c -> bool) -> 'a list -> 'b list -> 'c -> 'c list -> bool
 
-exception FailureAt of int
-
   (** split_nth n l
    * @returns two list, the first contains at least n elements, the second the
    * remaining ones
    * @raise Failure when List.length l < n *)
-(* FG: first argument: error msg *)
-val split_nth: string -> int -> 'a list -> 'a list * 'a list
+val split_nth: int -> 'a list -> 'a list * 'a list
 
  (** skip [n] [l] skips the first n elements of l *)
 val list_skip : int -> 'a list -> 'a list