On Oct 2, 2010, at 6:49 AM, Jorge wrote: > On 02/10/2010, at 15:29, Brendan Eich wrote: >> On Sep 6, 2010, at 1:43 AM, Dmitry A. Soshnikov wrote: >> >>> For what to create a proxy? It's only for catch-traps (yes, it may be used >>> additionally to create a _catcher_ with "Array" [[Class]], but without >>> additions -- i.e. if a user wants just to inherit from Array.prototype and >>> to have all arrays' stuff -- proxies are not needed to him). >> >> Proxies are required to update length to be one greater than index (property >> name-string P such that ToString(ToUint32(P)) == P and ToUint32(P) is not >> 2^32 - 1) when setting an indexed property. Array's magic [[Put]] is not >> inherited. > > Why not simply spec an Array.create() ?
Or why not simply expose the [[Get]] and [[Set]] protocol for Array so that it can be implemented directly by sub-classers? Having it hidden away in some primitive property of Array is what makes prototypal extension for Arrays insufficient in the first place, right? Regards > -no need to redefine what an array is. > -no need to learn new concepts ( we're used to Object.create() already ) > -easy to grasp, expected behaviour. > -it's a 3-liner that would take no more than 3 minutes to implement in JS in > any current UA. > -it would just need to be in the ES specs. > -- > Jorge. > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss -- Alex Russell [email protected] [email protected] [email protected] BE03 E88D EABB 2116 CC49 8259 CF78 E242 59C3 9723 _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
