I'm trying to learn how inheritance works in Perl 5. I have big problems to make it work and I can not understand what I´m doing wrong.
#!/user/bin/perl -w
use strict;
my $horse1 = Horse->new("George the Horse", 12);
$horse1->present();
$horse1->animalmethod();
############################
############################
package Animal;
{
sub animalmethod
{
my ($self)=@_;
print "I´m an animal. My name is $self->{Name}. I´m $self->{Age} y
+ears old\n";
}
}
package Horse;
{
our @ISA=("Animal");
sub new
{
my ($class, $name, $age) = @_;
my $ref = {Name=>$name, Age=>$age};
bless($ref, $class);
}
sub present
{
my ($self)=@_;
if($self->isa("Animal"))
{
print "I'm an animal.\n";
}
else
{
print "I'm not an animal.\n";
}
}
}
The code above contains a animal class and a horse class. The ISA-array should as I understand it instruct the hosre class to inherit from the animalclass. Thus the horse should be an animal and be able to use animal methods. When I run the code however the result is:
I´m not an animal.
Can´t locate object method animalmethod via package "Horse".
I´m writing excactly as it is written in the OO-manuals but it still doesn´t work. Could anyone be kind and tell me what the problem is?
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