Software / code / prosody
Diff
util/array.lua @ 4439:1c8d2c0d02db
util.array: Add pluck() method to pick a given property from each item
| author | Matthew Wild <mwild1@gmail.com> |
|---|---|
| date | Wed, 07 Dec 2011 05:04:55 +0000 |
| parent | 4387:06161b0b83f2 |
| child | 4440:c60ed6732b34 |
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--- a/util/array.lua Wed Dec 07 04:57:51 2011 +0000 +++ b/util/array.lua Wed Dec 07 05:04:55 2011 +0000 @@ -60,6 +60,13 @@ return outa; end +function array_base.pluck(outa, ina, key) + for i=1,#ina do + outa[i] = ina[i][key]; + end + return outa; +end + --- These methods only mutate function array_methods:random() return self[math.random(1,#self)];
