[JW Lua] Iteration of Tables

[Jan Angermüller]

Hi Bruce,

if you look at the pairs(table) description in 
http://lua-users.org/wiki/ForTutorial :
"Note that the order that items are returned is not defined, not even 
for indexed tables."

If you use *i*pairs instead, the order in which elements are returned is 
guaranteed
to be in the numeric order of the indices.

If you use pairsbykeys, they will be sorted in alphabetical key order.
That's not the order that you built up the table in your code
(i.e. your keys are not sorted in alphabetical order). Maybe that's a hint ?

Best regards,
Jan


Am 30.11.2014 20:51, schrieb Bruce Olson:
>
> Hi Jan,
>
> Yes, I had already looked at both those places. There are no useful 
> parameters to sort on, so sorting the table is not helpful. It is 
> actually already sorted. It's that the pairs iterator doesn't use that 
> order for some reason. And there is not another iteration scheme from 
> the Lua docs that seems to help.
>
> -- 
>
> Regards,
>
> Bruce
>
> *From:*JWLua [mailto:jwlua-bounces at jwmusic.nu] *On Behalf Of *Jan 
> Angermüller
> *Sent:* Sunday, November 30, 2014 1:37 PM
> *To:* The JW Lua script plug-in.
> *Subject:* Re: [JW Lua] Iteration of Tables
>
> Hi Bruce,
>
> I haven't read your code, but have you checked Jari's
> explanation for sorting and parsing Lua tables:
> http://jwmusic.nu/jwplugins/wiki/doku.php?id=jwlua:development#coll2table
>
> You can also have a look at the Lua manual:
> http://www.lua.org/pil/7.3.html
>
> Maybe this helps ?
>
> Best regards,
> Jan
>
> Am 30.11.2014 20:24, schrieb Finale at web.YOSound.com 
> <mailto:Finale at web.YOSound.com>:
>
>     Hi Jari,
>
>     How do I iterate through a table so that the order does not
>     change. In the attached code using "for k, v in pairs()" I get a
>     different order each time it is run. If I use "for k, v in
>     pairsbykeys()" it is always in the same order, just not the order
>     I want. ;) I'd like to get it in the order of the table. Thanks
>     for all your work and your prompt replies.
>
>     Best regards,
>
>     Bruce
>
>     -- 
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>
>     Bruce C. Olson
>
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>
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>
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>
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> -- 
> Jan Angermüller
> Jevenstedter Str. 80
> 22547 Hamburg
> Tel. 040 - 28 94 84 82
> www.angermueller.com  <http://www.angermueller.com>
>
>
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-- 
Jan Angermüller
Jevenstedter Str. 80
22547 Hamburg
Tel. 040 - 28 94 84 82
www.angermueller.com

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