Somewhat related: Take a look at Data::Dumper. With it you can print out your data structures comfortably (great for debugging), and this is also the prefered method to tell others (for example perlmonks) what data structures you have or want to have.

Just try it out, it is already included in your perl:

use Data::Dumper;
print Dumper(\%matrix);

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In reply to Re: Complex sort of array of hashes into an array of arrays by jethro
in thread Complex sort of array of hashes into an array of arrays by BioJL

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