On Mon, Jun 1, 2009 at 12:40 PM, Jeff Walden
<jwalden%2Bes@...> wrote:
I don't see the point in making fields of property descriptors omittable.
The point is exactly so that absent descriptor fields can default to their existing values when re-defining an already existing property, but default to canonical values (false or undefined) when defining a new property.
A different factoring that I've toyed with would split [[DefineOwnProperty]] into two distinct phases: 1) use existing property settings to flesh out partial property descriptor arguments into "fully populated" property descriptors. 2) Do all the acceptance testing and mutation using only these fully populated descriptor arguments.
In the end, I refrained from suggesting it because I concluded it did not result in any net simplification of the overall spec.
--
Cheers,
--MarkM
_______________________________________________
es-discuss mailing list
es-discuss@...
https://mail.mozilla.org/listinfo/es-discuss
