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util.iterators: Add ripairs() (ipairs() in reverse) (thanks Maranda)

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Matthew Wild 2013-04-12 00:44:49 +01:00
parent ef9b86202e
commit 8d41687872
1 changed files with 5 additions and 0 deletions
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5
util/iterators.lua
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@ -122,6 +122,11 @@ function it.tail(n, f, s, var)
--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