【进阶实战】Lua游标分页：沙巴克战报的last_id续读

local function page(list, pageNo, size)
    local from = (pageNo - 1) * size + 1
    return {unpack(list, from, from + size - 1)}   -- 删除即漂移
end

local function after(list, lastId, size)
    local out = {}
    for _, r in ipairs(list) do
        if r.id > lastId then
            out[#out + 1] = r
            if #out >= size then break end
        end
    end
    return out
end
local page1 = after(REPORTS, 0, 20)
sendmsg(actor, 1, "沙巴克战报首页 "
    .. #page1 .. " 条，游标 " .. page1[#page1].id)