On 14 February 2012 12:02, David Bruant <[email protected]> wrote: > Le 14/02/2012 11:23, Andreas Rossberg a écrit : >> To be sure, this is assuming that iteration order is fixed for a given >> implementation. If order is not specified, then I don't see why that >> should be required either. > > It is not required, but it's what experience tells us from the for-in loop.
Doesn't experience rather tell us that people expect a specific enumeration order, not just some fixed one? >> And I see potential reasons why order might differ for separate >> iterations over the same collection. > > I'm interested in hearing more :-) Dynamic changes of representation, for example. V8 does things like that all the time. And it currently goes to some length to make for-in deterministic. (But just to be clear, I'm still in favour of fully specified behaviour.) /Andreas _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
