diff options
author | filliatr <filliatr@85f007b7-540e-0410-9357-904b9bb8a0f7> | 1999-11-19 14:22:39 +0000 |
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committer | filliatr <filliatr@85f007b7-540e-0410-9357-904b9bb8a0f7> | 1999-11-19 14:22:39 +0000 |
commit | b0382a9829f08282351244839526bd2ffbe6283f (patch) | |
tree | a5b6ef413fb056288326d76ac10cb30847af847f /lib/util.ml | |
parent | 6f600fd1c528c97f7d2e1016af1650ab62b2b4c1 (diff) |
modules Bij, Gmapl, Stock
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@125 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'lib/util.ml')
-rw-r--r-- | lib/util.ml | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/lib/util.ml b/lib/util.ml index 30f1cbeb6..bb5023886 100644 --- a/lib/util.ml +++ b/lib/util.ml @@ -91,10 +91,6 @@ let list_assign l n e = in assrec [] (l,n) -let rec list_distinct = function - | h::t -> (not (List.mem h t)) && list_distinct t - | [] -> true - let list_map_i f = let rec map_i_rec i = function | [] -> [] @@ -154,6 +150,15 @@ let rec list_distinct = function | h::t -> (not (List.mem h t)) && list_distinct t | _ -> true +let list_subset l1 l2 = + let t2 = Hashtbl.create 151 in + List.iter (fun x -> Hashtbl.add t2 x ()) l2; + let rec look = function + | [] -> true + | x::ll -> try Hashtbl.find t2 x; look ll with Not_found -> false + in + look l1 + (* Arrays *) let array_exists f v = |