From 417653e0119f8b7479d9a52725c4cb32b3d4af14 Mon Sep 17 00:00:00 2001
From: notin
Date: Thu, 24 Jul 2008 11:16:48 +0000
Subject: Suite commit 11236

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11252 85f007b7-540e-0410-9357-904b9bb8a0f7
---
 lib/util.ml  | 4 ++++
 lib/util.mli | 1 +
 2 files changed, 5 insertions(+)

(limited to 'lib')

diff --git a/lib/util.ml b/lib/util.ml
index 2a60ad7b02..549b79e786 100644
--- a/lib/util.ml
+++ b/lib/util.ml
@@ -863,6 +863,10 @@ let list_cartesians op init ll =
 
 let list_combinations l = list_cartesians (fun x l -> x::l) [] l
 
+(* Drop the last element of a list *)
+
+let rec list_drop_last = function [] -> assert false | hd :: [] -> [] | hd :: tl -> hd :: list_drop_last tl
+
 (* Arrays *)
 
 let array_exists f v = 
diff --git a/lib/util.mli b/lib/util.mli
index a341fa5a29..d845dd2ebf 100644
--- a/lib/util.mli
+++ b/lib/util.mli
@@ -156,6 +156,7 @@ val list_skipn : int -> 'a list -> 'a list
 val list_addn : int -> 'a -> 'a list -> 'a list
 val list_prefix_of : 'a list -> 'a list -> bool
 val list_drop_prefix : 'a list -> 'a list -> 'a list
+val list_drop_last : 'a list -> 'a list
 (* [map_append f [x1; ...; xn]] returns [(f x1)@(f x2)@...@(f xn)] *)
 val list_map_append : ('a -> 'b list) -> 'a list -> 'b list
 val list_join_map : ('a -> 'b list) -> 'a list -> 'b list
-- 
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