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Hello all,
Dispite of the fact Lua is not a object oriented language, by means of
modules like Penlight, we have support.
However, some design patterns like Strategy, Abstract Factory or
Visitor demands, as far as I able to know, abstract classes or
interfaces.
So my question is: is there Lua implementations for abstract classes
or interfaces?
More broadly, I ask: does someone know examples of design pattern
implementation in Lua?
Best regards,

-- 
Luciano de Souza