2011/5/16 Brendan Eich <[email protected]>: > On May 16, 2011, at 12:01 AM, Brendan Eich wrote: > >> On May 15, 2011, at 11:55 PM, Erik Corry wrote: >> >>> 2011/5/16 Brendan Eich <[email protected]>: >>>> Not if the object is frozen. >>> >>> That shouldn't prevent you adding private names. See earlier message >>> in this thread. >> > >> Frozen means [[Extensible]] is false, so you can't add any properties, ... > > I'll go further: frozen means the implementation should be free to move the > object and anything associated with its shallow-frozen key/value state into > read-only memory, so the full force of 50-year-plus OS and hardware MMU > protection can ensure [[Extensible]] really is false.
I think this would also preclude the most efficient implementation of Weak Maps. In fact I have a hard time seeing how you would GC weak maps at all under these conditions. -- Erik Corry _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
