SPUG: Re: scalar swap challenge (SPOILER!)

[Colin Meyer]

On Wed, Oct 08, 2003 at 03:51:49PM -0700, Creede Lambard wrote:
> I think I sent my entry directly to Michael . . . 
> 
> my @stack;
> 
> unshift @stack, $a;
> unshift @stack, $b;
> $a = shift @stack;
> $b = shift @stack;
> 
> Note that this will work with any scalar, not just integers. Note that
> it also uses temporary storage, but not a temporary scalar.

The ^= solution occurred immediatly to me, because I had seen the c
language variety of this puzzler before. But I like your solution,
because it shows that you read the puzzle more thoroughly than me. ;-)

-Colin.