diff options
| -rw-r--r-- | util/set.lua | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/util/set.lua b/util/set.lua index a4f20138..02fabc6a 100644 --- a/util/set.lua +++ b/util/set.lua @@ -23,6 +23,14 @@ function items_mt.__call(items, _, k) return next(items, k); end +function set_mt:__freeze() + local a, i = {}, 1; + for item in self._items do + a[i], i = item, i+1; + end + return a; +end + local function new(list) local items = setmetatable({}, items_mt); local set = { _items = items }; |