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The most basic class function I can imagine.
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| -- public domain, CC0 | |
| -- extremely basic class. | |
| -- only supports instances and constructors (no inheritance, mixin, etc). | |
| -- Copypaste this function to your module to avoid depending on a class library. | |
| local function Class() | |
| local cls = {} | |
| cls.__index = cls | |
| setmetatable(cls, { | |
| __call = function(cls_, ...) | |
| local obj = setmetatable({}, cls) | |
| obj:ctor(...) | |
| return obj | |
| end | |
| }) | |
| return cls | |
| end | |
| -- Example: | |
| local function test_Class() | |
| local MyClass = Class() | |
| function MyClass:ctor(a) | |
| self.a = a | |
| end | |
| function MyClass:shout() | |
| print(self.a) | |
| end | |
| local m = MyClass("hi") | |
| n = MyClass("there") | |
| m:shout() -- prints 'hi' | |
| n:shout() -- prints 'there' | |
| end | |
| return Class |
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