----------------------------------------------------------- Lua面向對象3
local smartMan = {
    name = "Tinywan",
    age = 26,
    money = 800000,
    sayHello = function()
        print("Tinywan say 大家好")
    end
}
local t1 = {}
local mt = {
    __index = smartMan,
    __newindex = function(table, key, value)
        print(key .. 
 
"字段不存在不要試圖給他賦值")
    end
}
setmetatable(t1, mt)
t1.sayHello = function()
    print("HAHA")
end
t1.sayHello()
--- 輸出結果
-- sayHello字段不存在不要試圖給他賦值
-- Tinywan say 大家好

----------------------------------------------------------- Lua面向對象3
local smartMan = {
    name = "none"
}
local other = {
    name 
 
= "大家好，我是無賴的table"
}
local t1 = {}
local mt = {
    __index = smartMan,
    __newindex = other
}
setmetatable(t1, mt)
print("other的名字，賦值前：" .. other.name)
t1.name = "峨眉大俠"
print("other的名字，賦值後：" .. other.name)
print("t1 的名字：" .. t1.name)
--- 輸出結果
-- other的名字，賦值前：大家好，我是無賴的table
-- other的名字，賦值後：峨眉大俠
-- t1 的名字：none

有問題

local 變量不放在全局函數中去

以上不需要 return 返回

Lua程序設計之————Lua面向對象2