ulua实现类继承以及重写

ClassBase类实现如下：

ClaseBase = {};

function ClaseBase:new(id) 
	self.__index = self
	local obj = {objID = id};
	setmetatable(obj, self);
	return obj;
end

function ClaseBase:testA()
	log("objID == " .. self.objID);
end

function ClaseBase:testB()
	log("ClaseBase:testB()");
end

ClassA类实现如下：

ClassA = class("ClassA", ClassBase);

function ClassA:testB()
	log("ClassA:testB()");
end

ClassB类实现如下：

ClassB = class("ClassB", ClassBase);

function ClassB:testB()
	log("ClassB:testB()");
end

调用代码：

local classA = ClassA:new(1);
local classB = ClassB:new(2);
classA:testA();
classB:testA();
classA:testB();
classB:testB();

输出结果如下：

objID == 1
objID == 2
ClassA:testB()
ClassB:testB()