In your last chunk: 
foreach my $group (keys %no_priv_matches) {
    print "New interconnects for $group are:\n";
    foreach (@{$no_priv_matches{$group}}) {
        print "\t@{$no_priv_matches{$group}}\n";
    }
}

[download]
That inner foreach is not doing anything usefull, that's like saying this: 
foreach (@array) {
    print @array;
}

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Do you really mean: 
foreach (@array) {
    print $_;
}

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If that's the case, then maybe this will work: 
foreach my $group (keys %np_matches) {
    print "blah $group:\n";
    foreach (@{$np_matches{$group}}) {
        print "\t@{$_}\n";
    }
}

[download]
Hope this helps

Jeff 

R-R-R--R-R-R--R-R-R--R-R-R--R-R-R--
L-L--L-L--L-L--L-L--L-L--L-L--L-L--

In reply to (jeffa) Re: Dereferencing Hash of Array by jeffa
in thread Dereferencing Hash of Array by Tuna

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