One solution would be to use Class::Delegation. For example: 

package My::LibXML::Document;

# all method calls in this class should be 
# delegated to the object in 'base'
use Class::Delegation send => -ALL, to => 'base';

sub new {
    my $class = shift;
    my $self = bless {
        base        =>    XML::LibXML::Document->new('1.0','UTF8'),
        listeners    =>    [1,2,3],    # or whatever
    }, $class;
    return($self);
};

sub listeners {
    my $listeners = shift->{listeners};
    return(@$listeners);
};


package main;

my $o = My::LibXML::Document->new;
print $o->encoding, "\n";   # same as doing $o->{base}->encoding;
print join(", ", $o->listeners), "\n";

[download]

Unless your code explicitly checks that My::LibXML::Document isa XML::LibXML::Document you should bee fine.

In reply to Re: Anonymous Scalar Ref to Hash? by adrianh
in thread Anonymous Scalar Ref to Hash? by acalbazana

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