On Tue, Feb 10, 2009 at 1:52 PM, Brendan Eich <[email protected]> wrote:
> > I'm against such ontological confusion :-P. Me too! > [...] I'm not sure how the spec would even talk about such implementations, > other than by doing what Allen said and requiring indistinguishability from > native Array objects. [...] > Agreed on all points. But we can state this more simply. If an object is not observably distinguishable from a native Array object, then it simply *is* a native Array object. It is not a host object. A spec can only traffic in observably distinguishable differences. We can get the effect of specifying such indistinguishability simply by specifying that host objects may have as their [[Class]] property "Object", or any string not otherwise used by the spec as a [[Class]] value. -- Text by me above is hereby placed in the public domain Cheers, --MarkM
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