On Tue, Feb 4, 2014 at 3:52 PM, Allen Wirfs-Brock <[email protected]>wrote:
> This is now bug https://bugs.ecmascript.org/show_bug.cgi?id=2501 > > I have updated the working draft to normalize -0 keys to +0 in > Map.prototype.set and Set.prototype.add > The SpiderMonkey implementation does exactly this already. > > Allen > > On Feb 4, 2014, at 8:12 AM, Allen Wirfs-Brock wrote: > > > On Feb 3, 2014, at 8:51 PM, Vic99999 wrote: > > There was a SpiderMonkey bug1, and even a patch, for this for quite a > while. The patch now landed and will be in Firefox 29. > > > V8 got fixed last week too > > code.google.com/p/v8/issues/detail?id=3069 > > > but according to spec, "forEach" should call callback with "-0": > > > > Good catch! This allow applies to 'keys' and 'entries' enumeration. > > I seems to me, that if we want -0 and 0 to act as the same key value, that > we need to normalize -0 to 0 when storing it as a map key. SameValue0 > remains what we want to use when doing a key lookup, > > Allen > > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss > > > > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss > >
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