[DGD] arrays

[pete at ana.sk]

> Once again, yes.  Arrays are shared.  Use
> 
>     b = a[..];
> 
> if you want a copy.

Ok, thanks, sorry for troubling you. I knew arrays were shared, but 
i was imagining that a "shared" means copy-on-write behaviour. Is 
there anything else that is shared (not copy-on-write)? Mappings 
maybe? Or strings?

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