On Tue, Sep 6, 2011 at 10:59 AM, Mark S. Miller <[email protected]> wrote: > [...] Regarding infinite extensible > objects, the only problem I see off the top of my head is: What would > Object.getOwnPropertyNames return?
Hmm. I wonder if this is a problem even for finite objects. js> var x = []; js> x = Object.getOwnPropertyNames(x); ["length"] js> x = Object.getOwnPropertyNames(x); ["length", "0"] js> x = Object.getOwnPropertyNames(x); ["length", "0", "1"] js> x = Object.getOwnPropertyNames(x); ["length", "0", "1", "2"] You see where this is going. There's a finite number of array indexes, and the array .length property is always less than 2^32. Of course on current machines we will eventually run out of time or memory, but what is supposed to happen when we cross 2^32? -j _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
