Lua 基礎知識-面向對象

經過函數閉包的方式來實現面向對象

 1 -- 經過函數閉包的方式來實現面向對象
 2 
 3 function People(name)
 4     local self = {}
 5     local function init()
 6       self.name = name
 7     end
 8     
 9     self.sayHi = function()
10       print("Hello"..self.name)
11     end
12     init()
13     return self
14 end
15 
16 --local p = People("XiaoLi")
17 --p:sayHi()
18 
19 -- 繼承
20 function Man(name)
21     
22     local function init()
23       
24     end
25     
26     local self = People(name)
27     
28     self.sayHi()  -- 調用父類的函數
29     
30     self.sayHi = function()
31       print("重寫父類的函數 sayHi")
32     end
33     return self
34 end
35 
36 local m = Man("隔壁老王")
37 m:sayHi()

 

經過複製表的方式來實現面向對象

 1 -- Lua語言面向對象之複製表的方式面向對象
 2 
 3 function clone(tab)
 4   local ins = {}
 5   for key, var in pairs(tab) do
 6       ins[key] = var 
 7   end
 8   return ins
 9 end
10 
11 function copy(dist,tab)
12   for key, var in pairs(tab) do
13       dist[key] = var
14   end
15 end
16 
17 People ={}
18 
19 function People.sayHi(self)
20     print("People sayHi"..self.name) -- .. 表示字符串鏈接
21 end
22 
23 People.new = function(name)
24   local self = clone(People)
25   self.name = name
26   
27   return self
28 end
29 --
30 --local p = clone(People)
31 --p.sayHi()
32 
33 local p = People.new("Jinpp")
34 -- p.sayHi(p)    -- 運行結果 People sayHiJinpp
35 p:sayHi()   -- 運行結果 People sayHiJinpp
36 
37 
38 -- 類的繼承
39 Man = {}
40 Man.new = function(name)
41   local  self = People.new(name)
42   copy(self,Man)
43   return self
44 end
45 --
46 Man.sayHello = function()
47   print("Man say Hello")
48 end
49 
50 -- 函數的重寫
51 Man.sayHi = function(self)
52   print("Man sayHi "..self.name)
53 end
54 
55 local m = Man.new("Lisi")
56 m:sayHello()
57 m:sayHi()

 

蠻簡單的特別好理解。2016年01月24日21:43:39