[Python-3000] long/int unification

Guido van Rossum guido at python.org
Sat Aug 26 18:26:48 CEST 2006

On 8/25/06, Fredrik Lundh <fredrik at pythonware.com> wrote:
> Josiah Carlson wrote:
> > In the integer case, it reminds me of James Knight's tagged integer
> > patch to 2.3 [1].  If using long exclusively is 50% slower, why not try
> > the improved speed approach?
> looks like GvR was -1000 on this idea at the time, though...

I still am, because it requires extra tests for every incref and
decref and also for every use of an object's type pointer. I worry
about the cost of these tests, but I worry much more about the bugs it
will add when people don't tests first. ABC used this approach and we
kept finding bugs due to this problem.

--Guido van Rossum (home page: http://www.python.org/~guido/)

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