push @{$An{$n}->{b}} , $bb[$idx];

let's see, if perldsc did not make it clear enough, maybe perldata and perllol will help a bit further?
Anyway, looking for "references" and Hashes of Hashes (HoH) and Hashes of Arrays (HoA) in the documentation and also on this site may help you along.

What you are doing is pushing onto an array reference that is inside a hash (%An) of hashes the value in position ($idx) of an array (@bb).

I am a little curious though: If you don't know what you are doing, why are you doing it?

To see the results, do try use Data::Dumper;print Dumper \%An;

Cheers, Sören

In reply to Re^3: Print elements of hash references by Happy-the-monk
in thread Print elements of hash references by Anonymous Monk

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