Lua配置表内存优化

Posted 2021-06-29 那个妹子留步

local d={  index = {id = 1,name=1,age=2,hig=3},
[1] = {1,1,1,1},
[2] = {1,1,1,1},
[3] = {1,1,1,1},
[4] = {1,1,1,1},
}
local base = {
        __index = function(table,key)
            local keyIndex = KeyMap[key]
            if not keyIndex then
                print("key not found: ",key)
                return nil
            end
            return table[keyIndex]
        end, --基类，默认值存取
        __newindex = function()
            --禁止写入新的键值
            error("Attempt to modify read-only table")
        end
    }
setmetable(d,base)
base.__metatable = false --不让外面获取到元表，防止被无意修改
get(id)

id = d[id][d[index].id]
name = d[id][d[index].name]
age = d[id][d[index].age]