Re: metamethods for assignment and type conversion

[Adrien de Croy <adrien@...>]

Lua wrote:
> *Adrien de Croy <adrien@qbik.com <mailto:adrien@qbik.com>> writes:
> *In which case, separate functions will need to be written to deep-copy
> objects... you end up with code like
>
> deepcopy(var1, var2);
>
> or maybe
>
> var1.Assign(var2);
>
> instead of
>
> var1 = var2;
>
> My thought after reading this thread was:
>
> var1 = var2:Duplicate(); or
> var1 = var2:Copy()
neither of these affect the C++ object that is wrapped by var1,  var1 
instead gets a new pointer to wrap (being a copy), and the old one is 
garbage-collected.

If you want to modify the pointer that var1 wraps, then var1 needs to be 
involved in the function that does the assignment.

Regards

Adrien


> I do this in some of my Lua code and it works pretty well.  I find it 
> makes it pretty easy to tell when a new resource is allocated vs. 
> simply referenced in a new way.
>
> Of course what's clear to me, may be mud to others...
>
> James. 

--
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