Mercurial > lxmppd-hg-xmllex / file diff

--- a/util/set.lua	Wed Apr 22 18:03:02 2009 +0100
+++ b/util/set.lua	Wed Apr 22 18:03:42 2009 +0100
@@ -141,4 +141,8 @@
 	return set;
 end
 
+function xor(set1, set2)
+	return union(set1, set2) - intersection(set1, set2);
+end
+
 return _M;