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in reply to OO Perl: Methods To Reference Hash

( ..., hshAgg => %hshAgg )
...
return $self->{hshAgg};
...
$self->{hshAgg} => %hshAgg;

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You can't do that. A hash can only have strings for keys, and scalars for values. You can put REFERENCES to hashes in as the values, but then you need to access them accordingly. 
hshAgg => \%hshAgg
...
return %{$self->{hshAgg}};
...
$self->{hshAgg} => \%hshAgg;

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Even yet, returning a whole hash isn't nice; you should return a reference to it, but then your caller has to be modified to expect a reference, too.

--
[ e d @ h a l l e y . c c ]

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Re: Re: OO Perl: Methods To Reference Hash
by P0w3rK!d (Pilgrim) on Jun 03, 2003 at 21:00 UTC
    My hash is being created correctly and looks something like this: 
    HASH DUMP: 2030000 => 2030000.xml
HASH DUMP: 2030001 => 2030001.xml
HASH DUMP: 2030002 => 2030002.xml

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    When I attempt to dump it is after the object has been instantiated with the hash in it using a set() method. 
        my %hshAgg     = $self->get_hshAgg();
    dumpHash(%hshAgg);

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    ...the dump looks like this: 
    HASH DUMP: HASH(0x223db34) =>

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    What am I doing wrong here? 
    sub run {
    my $self        = Myobj->new(@_);
    ...
    $self->set_hshAgg(%hshAgg);
    ...
}

# method within object
sub myProblem {
    my %hshAgg     = $self->get_hshAgg();
    dumpHash(%hshAgg);
}

    [download]

    -P0w3rK!d

[reply]
[d/l]
[select]

      Whenever you're trying to debug data structures, I recommend using Data::Dumper. This will help you see the structures in Perl syntax, and will avoid any bugs you may introduce in your own home-spun "dumping" methods. 

      use Data::Dumper;
...
print Dumper \%hashFoo;
print Dumper $refHashFoo;

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      Other useful learning materials are in perlreftut and perllol.

      --
      [ e d @ h a l l e y . c c ]

[reply]
[d/l]
        The problem is not with the data, it is with the set() and get() methods that manipulate the hash within the object.
[reply]
Re: Re: OO Perl: Methods To Reference Hash
by P0w3rK!d (Pilgrim) on Jun 03, 2003 at 20:42 UTC
    Ah...thank you. I *did* try referencing via '\', but could not figure out the get() method specifically.

    Thank you :)

    -P0w3rK!d

[reply]

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