[Python-Dev] Why is nan != nan? (original) (raw)
Jesus Cea jcea at jcea.es
Fri Mar 26 02:37:48 CET 2010
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On 03/26/2010 01:57 AM, Steven D'Aprano wrote:
In fact, identity of NANs is itself an implementation quirk of programming languages like Python: logically, NANs don't have identity at all.
To put it another way: all ONEs are the same ONE, even if they come from different sources, are in different memory locations, or have different identities; but all NANs are different, even if they come from the same source, are in the same memory location, or have the same identity.
+inf. Bravo!.
:-)
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