On Jan 21, 2014, at 9:58 AM, Brandon Benvie wrote: > The implementations of Maps and Sets in the wild that I am aware of (IE11, > SpiderMonkey, and V8 behind a flag) all currently use SameValue as comparator > while the spec calls for SameValueZero. It seems like either the > implementations need to update (quickly) to match the spec. before too much > code depends on this, or the spec should be changed to match the > implementation reality. > > This discrepancy has the potential to make for some hard to trace bugs, due > to the otherwise near-invisibility of the -0/0 difference. Regardless of the > merits of each comparator, I think at this point it's more important that > everyone (implementers + spec.) is following the same marching orders.
This was pretty throughly discussed during TC39. SameValue0 is a very intentional choice. The marching orders are the spec. Allen _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
