From: "Paul Ranson" 

IIRC the '^' operator is 'xor'. I suspect it boils down to,

x = x ^ y ;
y = y ^ x ;
x = x ^ y ;

therefore it resolves to y = y ^ x ^ y ; or x and x = x ^ y ^ y ^ x ^ y ;
or y. Probably not going to work for strings or floats. And I suspect real
computers and real compilers will run a conventional swap at least as fast.

BTW STL includes 'swap' as a template, use it...

Paul

"Geo"  wrote in message
news:41a10f7e$2{at}w3.nls.net...
> "Tony Williams"  wrote in message
> news:41a10437$1{at}w3.nls.net...
>
>>      x ^= y ^= x ^= y;
>
>
>> There, that's much harder to understand 
>
> Ok now explain what ^= does.
>
> Geo.
>
>

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