This doesn't DWIM, $obj->show() returns nothing. It works of course if I move the show method to Child.pm, but I'd need to duplicate subs into all children, which is a sin. What magic am I missing ?

Your missing that the package var referenced by the method is $data in the package proto. You want something like:

sub show {
    my $self = shift ;
    my $proto = ref $self ;
    my $val = eval "\$${proto}::data";
    print $val;
    print Dumper $val
}

[download]

or, to avoid all that evil messing about with package global variables and associated hassles with the cases where you might want sub-classes of your children to inherit the same $data why not just do it like:

{
    package Parent;
    use Data::Dumper ;
    
    sub new {
        my $proto = shift ;
        return bless {}, $proto
    }
    
    
    sub show {
        my $self = shift ;
        my $val = $self->data;
        print Dumper $val
    }
}
{
    package Child;
    use base 'Parent' ;
    sub data { return { one => 1, two => 2 } }
}

[download]

In reply to Re: displaying package variable from inherited method. by adrianh
in thread displaying package variable from inherited method. by wazoox

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