On Fri, Nov 09, 2012 at 08:44:15AM -0800, Nils Bruin wrote:
> Yes, this is odd. python's sum really does start with adding zero,
> even if no initial value is given.
This indeed looks like a natural spot for optimization. However it
would change the semantic:
sage: sum([1,2], 0.0)
3.00000000000000
Besides, sum would need to know whether ``start`` is a neutral
element before doing the optimization.
Cheers,
Nicolas
--
Nicolas M. Thiéry "Isil" <nthi...@users.sf.net>
http://Nicolas.Thiery.name/
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