Thoughts on IEEE P754
jason.orendorff at gmail.com
Fri Aug 22 07:22:36 PDT 2008
On Fri, Aug 22, 2008 at 6:22 AM, Sam Ruby <rubys at intertwingly.net> wrote:
> On Fri, Aug 22, 2008 at 2:30 AM, Jason Orendorff
> <jason.orendorff at gmail.com> wrote:
>> var a = ;
>> a = "first";
>> a[0.0m] = "second"; // a second property?
>> a[0.000m] = "third"; // a third?
> It seems to me that if trailing zeros are retained in a call to
> ToString, then to be consistent with ES3, the three assignments above
> would produce three properties. And if trailing zeros are lost, you
> would expect to only have one. Both approaches are internally
> consistent, and it surprises me to see either one characterized as
> "breaking" array lookup.
Well, the intuition is that two equal numbers should index the same
property. This is an invariant in ES3 and it makes a lot of sense.
More information about the Es-discuss