Alright, this is definitely silly, and nobody would do this but... you just wanted some ideas 
$s = "a=1, b=2, c=3";
$s =~ s/a=(\d+), b=(\d+), c=(\d+)/a=$2, b=$3, c=$1/;

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and then there is this, which uses the hash the same way as the array example you gave... but it's with a hash so it's different hehe :) 
@n{a, b, c} = (1, 2, 3);
@n{a, b, c} = @n{b, c, a};

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hrmm... I had another example... but I'll quit while I'm ahead and don't have people questioning my sanity.

In reply to What about... by gaspodethewonderdog
in thread interchanging variables the tough way by ANKUR

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