local table = {10, 20, 30}

function ipairs(t)
    print("inside!")
    local i = 0
    return function (state, control)
        print(state, control)
        i = i + 1
        if i > #table then
            return nil, nil
        end
        return i, t[i]
    end, "otus", "potus"
end

print("before")
for k, v in ipairs(table) do
    print(k, v)
end
print("after!")