<=> and obfuscation

[Norman Diamond]

> 	To exchange two items without an intermediate variable, try:
> 
> 	b ^= a ^= b ^= a
> 
> Jon Shapiro

Try it enough, and you'll see that some compilers bind the value of the
first b before it is assigned at its second appearance, and other compilers
bind it afterwards.  Correct results are obtained in the latter case.
Correct programming is obtained in neither case.
-- 

   Norman Diamond

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"Opinions are those of the keyboard, and do not reflect on me or higher-ups."