Re: Question about List Objects...

[Paul Johnson]

Christoph Andreas Vanberg wrote:
> 
> Hi,
> 
> I'm trying to figure out what exactly happens when I do the following:
> 
> newList = [oldList copy: aZone];
> 
> Does this command make a copy of the list which contains pointers to the
> same objects, or does it make copies of the objects as well?
> 
> Does anyone know?
> 
You might check the swarm-support archives on this, as it has come up
several times in the time I've been here.  The copy does not do a deep
copy and duplicate objects, it just does a shallow copy of the pointers
to the objects that are in the list.  If you need to duplicate objects,
you should write a method in your class that does it, that way you make
sure all features are created and copied. THen you can add those copies
to the newList.

-- 
Paul E. Johnson                       email: address@hidden
Dept. of Political Science            http://lark.cc.ukans.edu/~pauljohn
University of Kansas                  Office: (785) 864-9086
Lawrence, Kansas 66045                FAX: (785) 864-5700


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