The advice of Anonymous Monk above is all excellent, but this for one thing will not fly. 

($a,$b)=split ("\t");
$a=@a;
$b=@b;

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Whatever you have in $a and $b after the split is immediately turned to 0 by assigning empty arrays to those variables.

In reply to Re: use of uninitialized value by farang
in thread use of uninitialized value by rocketperl

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