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-rw-r--r--lib/util.ml4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/util.ml b/lib/util.ml
index a199aacd23..287dd37191 100644
--- a/lib/util.ml
+++ b/lib/util.ml
@@ -604,6 +604,10 @@ let rec list_remove_assoc_in_triple x = function
| [] -> []
| (y,_,_ as z)::l -> if x = y then l else z::list_remove_assoc_in_triple x l
+let rec list_assoc_snd_in_triple x = function
+ [] -> raise Not_found
+ | (a,b,_)::l -> if compare a x = 0 then b else list_assoc_snd_in_triple x l
+
let list_add_set x l = if List.mem x l then l else x::l
let list_eq_set l1 l2 =