On 05/03/2014 05:05 AM, Steven D'Aprano wrote:
On Sat, May 03, 2014 at 06:38:21PM +1200, Greg Ewing wrote:
Steven D'Aprano wrote:
Particularly for mathematically-focused code, I think it would be useful to be able to use identifiers like (say) σ² for variance,
Having σ² be a variable name could be confusing. To a mathematician, it's not a distinct variable, it's just σ ** 2.
Actually, not really. A better way of putting it is that the standard deviation is "just" the square root of σ². Variance comes first (it's defined from first principles), and then the standard deviation is defined by taking the square root.
The main problem I see is that many possible questions come to mind rather than one simple or obvious interpretation.