Spaceship Operator

Mike Samuel mikesamuel at
Tue Jun 27 20:19:30 UTC 2017

On Tue, Jun 27, 2017 at 4:13 PM, Isiah Meadows <isiahmeadows at> wrote:
> For what it's worth, for most practical purposes, `arr.sort((a, b) => b -
> a))` works well enough. (The only thing it doesn't work well with are NaNs,
> but in practice, those almost never occur.)

Don't numeric comparison operators typically sort -0 before +0?

((a,b)=>b-a) is also problematic for an array that contains two or
more infinite values with the same sign and one or more finite values
since isNaN(Infinity-Infinity).   That NaN from the comparator can be
triggered or not based on details of the sorting algo and the precise
placement on the Infinities.

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