Re: advice needed: OO style

[Mark Hamburg <mark@...>]

On Apr 30, 2011, at 1:20 AM, Henk Boom wrote:

> On 29 April 2011 19:09, uki <ukaszg@gmail.com> wrote:
>> local _M = {}
>> -- stolen from: https://github.com/kikito/middleclass/wiki/Private-stuff
>> local _private = setmetatable({}, {__mode = "k"})
>> 
>> --constructor
>> function _M:new(...)
>>   local object = {}
>>    -- do stuff
>> 
>>   _private[object].privateField = 1
>>   return object
>> end
> 
> Just beware of memory leaks pre-5.2 if the value contains a reference
> to the object.

That applies to indirect references as well. If you want to always go through a proxy object, you are probably better off using a userdata and using its environment to point to the Lua table.

Mark