diff options
| -rw-r--r-- | util/set.lua | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/util/set.lua b/util/set.lua index bb318adf..84bfe8c4 100644 --- a/util/set.lua +++ b/util/set.lua @@ -141,4 +141,8 @@ function intersection(set1, set2) return set; end +function xor(set1, set2) + return union(set1, set2) - intersection(set1, set2); +end + return _M; |