On Jun 16, 2011, at 9:18 AM, Mark S. Miller wrote:
> On Thu, Jun 16, 2011 at 9:15 AM, Brendan Eich <[email protected]> wrote:
> We should have no more attribute "keywords" in property descriptors than we
> need to model the semantics we wish to reflect on via Object.* APIs and
> intercede in via proxies. Do we really want to split "DontDelete" back out of
> "configurable"?
>
> We do not. We need merely specify that (a non-frozen) array.length is
> configurable but that arrays refuse to delete them. This is just part of the
> magical length behavior provided by arrays, with the virtues that it can be
> faithfully emulated by proxies.
Clever. To rephrase your previous reply to avoid double-negatives ("this is not
guaranteed not to be magical"), "configurable properties may behave magically".
I agree it's the non-configurable magic that we should address.
Bonus, I think this will simplify things in our implementation of Array length
vs. the ES5 Object.* APIs.
/be_______________________________________________
es-discuss mailing list
[email protected]
https://mail.mozilla.org/listinfo/es-discuss
