argument code generator

gistfile1.txt

local function t1(n)
    local t = {}
    for i = 1, n do
        t[i] = "a" .. i
    end
    return table.concat(t, ',')
end

local function t2(n)
    local a = n>0 and "a1" or ""
    for i = 2, n do
        a = a..",a" .. i
    end
    return a
end

for n = -1,10 do
    print(n)
    assert(t1(n) == t2(n))
end