On Jul 4, 2010, at 12:30 AM, Brendan Eich wrote: > On Jul 3, 2010, at 10:27 PM, Leo Meyerovich wrote: > >> Is object identity the inverse of hash? > > No, merely the missing-from-the-standard-library egal function that you can > write yourself. See > > http://wiki.ecmascript.org/doku.php?id=strawman:egal >
... then I still don't see how to do an encoding of weak references that isn't invasive (e.g., adding in a user-level GC that constructors are somehow guaranteed to go through). For a non-invasive approach, there might be probablistic guarantees achieved by API restrictions (e.g., limit the number of bad guesses of IDs for the otherwise forgeable ID->object function) or a creative use of lexically scoped regions, but I'm skeptical of anything complicated like that. Did you have something in mind in how hashes (or some other feature) enable weak references / dictionaries? It didn't jump out at me and I want them :) - Leo _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
