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() ? -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
