Software `/` code `/` prosody

Changeset

1030:a82268d507fc

util.set: Add set.xor() to get a set consisting of items not in both sets

author Matthew Wild <mwild1@gmail.com>

date Wed, 22 Apr 2009 18:03:42 +0100

parents 1029:4ead03974759

children 1031:ec013f93de81

files util/set.lua

diffstat

1 files changed, 4 insertions(+), 0 deletions(-) [+]

line wrap: on

line 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;