ES4 draft: enumerability

Lars Hansen lhansen at adobe.com
Thu Apr 24 11:52:28 PDT 2008


> -----Original Message-----
> From: es4-discuss-bounces at mozilla.org 
> [mailto:es4-discuss-bounces at mozilla.org] On Behalf Of Jason Orendorff
> Sent: 24. april 2008 09:53
> To: Brendan Eich; es4-discuss
> Subject: Re: ES4 draft: enumerability
> 
> The iterator proposal:
> http://wiki.ecmascript.org/doku.php?id=proposals:iterators_and
_generators
> is out of date or seems contradictory in several places:
> 
> * Do implementations have to provide the primitives in the "magic"
>   namespace?

No.  More than that, they may not provide those primitives except as a
vendor extension (which presumably will be allowed by the spec), but
since many of them are abstraction-breaking it will not be wise to
do so.

--lars



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