You're getting confused with how Data::Dumper displays stuff. All three filehandles are identical, so it's pointing out that if you do something to one fh, you're doing it to the fh referenced in all three.

Personally, given that your keys are "cpy##", I'd use an array of hashes. 

$self->{copybooks} = [
    Cobol::Copybook->new({filehandle => \*DATA, filter => '00'}),
    Cobol::Copybook->new({filehandle => \*DATA, filter => '01'}),
    undef,
    undef,
    Cobol::Copybook->new({filehandle => \*DATA, filter => '04'}),
];

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In reply to Re: Hash of References in an Object by dragonchild
in thread Hash of References in an Object by pboin

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