One other thing that the others seemed not to pick up on, probably because the line does not seem to have any functionality in this program:
my @cols = qw('data.txt');
You should not use quotes inside a qw(...) unless you actually want the quotes to be part of the data. qw will quote each item for you anyway.

In reply to Re: Passing a $Scaler into a while loop... by cdarke
in thread Passing a $Scaler into a while loop... by chinamox

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