Mercurial > prosody-hg
comparison util/set.lua @ 4908:8c5b5ebaacb0
util.set: Change '/' operator from filter to map+filter (nil to drop from set, false is a valid item). No code found which depends on current behaviour.
| author | Matthew Wild <mwild1@gmail.com> |
|---|---|
| date | Thu, 24 May 2012 18:51:18 +0100 |
| parents | 316e2b09a562 |
| children | bd0ff8ae98a8 c888f548876b |
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| 4907:32b638a8da5b | 4908:8c5b5ebaacb0 |
|---|---|
| 24 end | 24 end |
| 25 function set_mt.__div(set, func) | 25 function set_mt.__div(set, func) |
| 26 local new_set, new_items = _M.new(); | 26 local new_set, new_items = _M.new(); |
| 27 local items, new_items = set._items, new_set._items; | 27 local items, new_items = set._items, new_set._items; |
| 28 for item in pairs(items) do | 28 for item in pairs(items) do |
| 29 if func(item) then | 29 local new_item = func(item); |
| 30 new_items[item] = true; | 30 if new_item ~= nil then |
| 31 new_items[new_item] = true; | |
| 31 end | 32 end |
| 32 end | 33 end |
| 33 return new_set; | 34 return new_set; |
| 34 end | 35 end |
| 35 function set_mt.__eq(set1, set2) | 36 function set_mt.__eq(set1, set2) |