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Can Someone explain me why even using Tie::IxHash I can not get the output data in the same order that it was inserted? See code below.

#!/usr/bin/perl
use warnings;
use Tie::IxHash;
use...

Thank you very much for the solution, it works perfect.
Does anybody know how can I tie this hash %products?
I tried to use:
use Tie::IxHash;
my %products;
tie %products, "Tie::IxHash";

But...

I am trying to generate a report based on an input file with the following layout:

COMPANY1--SITE1--PROGRAM1--PRODUCT1--PRICE1
COMPANY1--SITE1--PROGRAM2--PRODUCT1--PRICE1...