X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fextlib%2FhExtlib.mli;h=0a8921b1b83622298d107c9df1792cfa83a5d1b4;hb=7233348f05485c2ee317df9c3407cf1ce7e56927;hp=96e7a398cbe275d2148eca4ec6be0e637a3a7b23;hpb=ff5d621723a60609c67152c110b8386f7902c1ff;p=helm.git

diff --git a/helm/software/components/extlib/hExtlib.mli b/helm/software/components/extlib/hExtlib.mli
index 96e7a398c..0a8921b1b 100644
--- a/helm/software/components/extlib/hExtlib.mli
+++ b/helm/software/components/extlib/hExtlib.mli
@@ -87,10 +87,12 @@ val filter_map: ('a -> 'b option) -> 'a list -> 'b list (** 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*)
-val list_findopt: ('a -> 'b option) -> 'a list -> 'b option
+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
+(* 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
 (* Iters in parallel on two lists until the first list is empty.
    The second one can be shorter and is padded with a default value.
@@ -100,14 +102,19 @@ val list_iter_default2: ('a -> 'b -> unit) -> 'a list -> 'b -> 'b list -> unit
    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. *)
 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 one
+   * remaining ones
    * @raise Failure when List.length l < n *)
 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
+
 val mk_list: 'a -> int -> 'a list
 
 (* makes the list [start; ...; stop - 1] *)