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steve donovan escribió:
On 9/18/07, David Manura <dm.lua@math2.org> wrote:
  
Duck wrote:
    
 setmetatable(t,{__index=c})
      
There's an implementation of the third way in
http://lua-users.org/wiki/SimpleLuaClasses,
showing how inheritance etc works.  There are some interesting
trade-offs, but it definitely makes sense to have a metatable
corresponding to the 'class' object of other languages like Smalltalk
and Python - that is, a metatable shared by all instances of that
class type.

steve d.


  
There's also this library I wrote, inspired in SimpleLuaClasses. It  adds multiple inheritance, both standard and virtual (C++ style).

http://lua-users.org/wiki/MultipleInheritanceClasses

-- HE