Software / code / prosody
Diff
util/iterators.lua @ 5468:2660407c3b73
util.iterators: Add ripairs() (ipairs() in reverse) (thanks Maranda)
| author | Matthew Wild <mwild1@gmail.com> |
|---|---|
| date | Fri, 12 Apr 2013 00:44:49 +0100 |
| parent | 4545:c9b91ddc9c11 |
| child | 5581:167c1da54606 |
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--- a/util/iterators.lua Fri Apr 12 00:31:05 2013 +0100 +++ b/util/iterators.lua Fri Apr 12 00:44:49 2013 +0100 @@ -122,6 +122,11 @@ --return reverse(head(n, reverse(f, s, var))); end +local function _ripairs_iter(t, key) if key > 1 then return key-1, t[key-1]; end end +function it.ripairs(t) + return _ripairs_iter, t, #t+1; +end + local function _range_iter(max, curr) if curr < max then return curr + 1; end end function it.range(x, y) if not y then x, y = 1, x; end -- Default to 1..x if y not given
