comparing nan "number"
John J. Lee
jjl at pobox.com
Wed Dec 3 13:16:14 EST 2003
Michael Hudson <mwh at python.net> writes:
> jjl at pobox.com (John J. Lee) writes:
>
> > Alexander Schmolck <a.schmolck at gmx.net> writes:
> > [...]
> > > possibly be `False` and {x:"some value}[x] might well raise an exception if
> > > `x` is a nan (or indeed one of infinitely many Numeric arrays with
> > [...]
> >
> > Don't you mean SomeMapping((x, "some value"))[x]? A dict lookup
> > doesn't use __eq__.
>
> Huh? Yes it does (*after* __hash__, of course, but...).
Oh, collisions, right?
John
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