From: Tony Williams 

John Beckett wrote:
> "Geo"  wrote in message
news::
>
[snip]
> Sounds a bit weird to me. The following is part of C lore:
>
> void swap(int x, int y)
> {
>     int temp = y;
>     y = x;
>     x = temp;
> }

Shameless waste of stack space!

void swap (int &x, int &y)
{
     x ^= y ^= x ^= y;
}

There, that's much harder to understand 

--
Tony

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