Try to make it base on this: 
use Data::Dumper;

open(DATA, "<", "test.dat");
my $data = {};
while (<DATA>) {
    chomp;
    /(.*)::=(.*)/;
    if (!exists($data->{$1})) {
        $data->{$1} = [];
    }
    $data->{$1}[$#{$data->{$1}} + 1] = $2;
}
print Dumper($data);

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In reply to Re: Hash of Arrays by pg
in thread Hash of Arrays by Anonymous Monk

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