Module:LuaCall: Difference between revisions

end

-- ipairsAt()/ipairsAtOffset() is pending to be placed in [[Module:TableTools]]

--[[

------------------------------------------------------------------------------------

-- ipairsAt

--

-- This is an iterator for arrays. It can be used like ipairs, but with

-- specified i as first index to iterate.

--

-- for i,v in p.ipairsAt(t, 3) do body end

--

-- will iterate over the pairs (3,t[3]),(4,t[4]),..., up to the first

-- integer key absent from the table.

--

-- Note: The following is an example to do range iteration from 3 to j

--

-- for i,v in p.ipairsAt(t, 3) do if i>j then break end; body end

--

------------------------------------------------------------------------------------

--]]

local function ipairsAt(t, i)

--return ipairsAtOffset(t, i-1)

-- This may be less overhead than return ipairsAtOffset() above

local f, s, i0 = ipairs(t)

return f, s, i0+i-1

end

--[[

------------------------------------------------------------------------------------

-- ipairsAtOffset

--

-- Like ipairsAt(), except that it treat argument i as offset from 1

--

------------------------------------------------------------------------------------

--]]

local function ipairsAtOffset(t, i)

local f, s, i0 = ipairs(t)

return f, s, i0+i

for _, v in ipairsAtOffset(frame.args, 1) do