1：元表与元方法
测试001：
student = {
name = "cocotang",
id = 10001,
calss = "math",
}
function student:SayHello(name)
print("student say hello to : "..name)
end
human = {
name = "human",
worldId = 10000001,
}
function human:SayHello(name)
print("human say hello to : "..name)
end
setmetatable(student,human)
human.__index=human
student:SayHello("pikaboo")
======================debug===================
student say hello to : pikaboo
测试002：
student = {
name = "cocotang",
id = 10001,
calss = "math",
}
function SayHello(name)
print("student say hello to : "..name)
end
human = {
name = "human",
worldId = 10000001,
}
function human:SayHello(name)
print("human say hello to : "..name)
end
setmetatable(student,human)
human.__index=human
student:SayHello("pikaboo")
======================debug=================
human say hello to : pikaboo
Q：student继承human( setmetatable(子table,父table) 父table.__index=父table)