Message 81714 - Python tracker

Message81714

Author	Rhamphoryncus
Recipients	LambertDW, Rhamphoryncus, chemacortes, jcea, mark.dickinson, pitrou, rhettinger
Date	2009-02-12.03:19:56
SpamBayes Score	1.0980765e-06
Marked as misclassified	No
Message-id	<1234408799.19.0.711064837654.issue5186@psf.upfronthosting.co.za>
In-reply-to

Content
Testing with a large set of ids is a good demonstration, but not proof. Forming a set of all possible values within a certain range is proof. However, XOR does work (OR definitely does not) — it's a 1-to-1 transformation (reversible as you say.) Additionally, it still gives the unnaturally low collision rate when using sequential addresses, so there's no objection there.

Content

Testing with a large set of ids is a good demonstration, but not proof.
 Forming a set of *all* possible values within a certain range is proof.

However, XOR does work (OR definitely does not) — it's a 1-to-1
transformation (reversible as you say.)

Additionally, it still gives the unnaturally low collision rate when
using sequential addresses, so there's no objection there.

History
Date	User	Action	Args
2009-02-12 03:19:59	Rhamphoryncus	set	recipients: + Rhamphoryncus, rhettinger, jcea, chemacortes, mark.dickinson, pitrou, LambertDW
2009-02-12 03:19:59	Rhamphoryncus	set	messageid: <1234408799.19.0.711064837654.issue5186@psf.upfronthosting.co.za>
2009-02-12 03:19:56	Rhamphoryncus	link	issue5186 messages
2009-02-12 03:19:56	Rhamphoryncus	create