Yeah, but you could run into overflow problems with large values of a
and b.
Sean
Jan Walter wrote:
>
> If you are working with numbers, which is perhaps not your case, you can use
> this simple trick to swith values of $a and $b:
>
> $a = $a + $b;
> $b = $a - $b;
> $a = $a - $b;
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