is there a quick way to exchange the values of two vars without using a third one?
i mean if i got $x=1and $y=2 i wanna make $x=$y and $y=$x so that after that, i got $x=2 and $y=1.
I'm pretty confused.
I just tried $z=$x then $x=$y and then $y=$z and it works, but it's awful...