Deterministic enumeration

Brendan Eich brendan at mozilla.com
Thu Apr 25 11:56:48 PDT 2013


David Bruant wrote:
> Hi,
>
> I've seen a bug report on Firefox [1] and was wondering whether 
> deterministic property enumeration [2] was still on the table for ES6.

My comment from that bug:

https://bugzilla.mozilla.org/show_bug.cgi?id=865760#c5

Ignoring the SpiderMonkey threshold, we do have 
http://wiki.ecmascript.org/doku.php?id=strawman:enumeration. It was not 
promoted to harmony:proposals status for ES6. It's a bit late to jam in, 
but implementations along with that strawman should try to converge. I 
doubt the threshold will find consensus.

There's a long V8 issue on enumeration not using insertion order: 
http://code.google.com/p/v8/issues/detail?id=164 I believe. Closed: 
WorkingAsIntended, still drawing fire from developers.

/be

>
> Thanks,
>
> David
>
> [1] https://bugzilla.mozilla.org/show_bug.cgi?id=865760
> [2] http://wiki.ecmascript.org/doku.php?id=strawman:enumeration
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