Re: OO Perl: Methods To Reference Hash

[halley]

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

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;

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 ]

[P0w3rK!d]

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

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);

...the dump looks like this:

HASH DUMP: HASH(0x223db34) =>

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);
}




-P0w3rK!d

[halley]

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;

Other useful learning materials are in perlreftut and perllol.

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

[P0w3rK!d]

The problem is not with the data, it is with the set() and get() methods that manipulate the hash within the object.

[P0w3rK!d]

Ah...thank you. I *did* try referencing via '\', but could not figure out the get() method specifically.


Thank you :)


-P0w3rK!d