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| author | Matthew Wild <mwild1@gmail.com> | 2009-04-22 18:03:42 +0100 |
|---|---|---|
| committer | Matthew Wild <mwild1@gmail.com> | 2009-04-22 18:03:42 +0100 |
| commit | 0d98ee54b5a332e5d6a42aebf85026da2d432d2f (patch) | |
| tree | 370491cef71fe075e9cbabec4b734503a513ebe6 | |
| parent | 901af1535f708d391d10e7c116d4a9538b89dac2 (diff) | |
| download | prosody-0d98ee54b5a332e5d6a42aebf85026da2d432d2f.tar.gz prosody-0d98ee54b5a332e5d6a42aebf85026da2d432d2f.zip | |
util.set: Add set.xor() to get a set consisting of items not in both sets
| -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; |