Re: Bug candidate in Lua 5.1.2 ?

[Asko Kauppi <askok@...>]

Simple.  Tables are reference type in Lua, so it's the same table, no  
matter how many names you give.

To make a copy, you need to do that yourself. And decide whether to  
do "shallow copy", "deep copy" or something in between.

-asko


G.H. kirjoitti 2.11.2007 kello 15:13:

> Hello everyone.
>
> I am pretty curious about this because it looks weird.
> You'll see, it appears to be that table.remove() isn't
> working properly in Lua 5.1.2 or, at least, it has
> unpleasant "secondary effects" when modifying values
> previously assigned from _different variables_ :
>
> a = {3,7,8}
> return #a
> 3
> b = a
> return #b
> 3
> table.remove(b, 1)
> return #b
> 2
> return #a
> 2
>
> I have tried in two different computers obtaining the
> same results. Any ideas or teachings about this?
> I hope it'd be my imagination...
>
> Thank you in advance -- Mario