Hello monks,

Hopefully someone can alleviate my confusion w.r.t. when to use Exporter/@ISA when subclassing.

My code - which works as expected:

package MyClass::A;
use strict;
use warnings;
use Exporter;
use base qw(Net::Server::PreFork);
#our @ISA = qw(Exporter);
our @EXPORT = qw(new serve);
our @EXPORT_OK = qw();

sub new
{
  my ($class_name) = @_;
  my $self = {};
  bless $self, $class_name;

  #...
  return $self;
}

sub process_request
{
    #...
}

sub serve
{
    my ($self) = @_;
    MyClass::A->run();
    return $self;
}


my $s = MyClass::A->new();
$s->serve();
[download]

However, if I uncomment #our @ISA = qw(Exporter); Then I get the error

Can't locate object method "run" via package "MyClass::A" at b.pl line
+ 28.
[download]

I normally create all my classes using our @ISA = qw(Exporter);, so I'm not clear on why this is failing now. Is it because I'm sub-classing Net::Server::PreFork?

Second - and I suppose related - question is that if I comment out as follows:

#use Exporter;
use base qw(Net::Server::PreFork);
#our @ISA = qw(Exporter);
[download]

everything still works normally, so why on earth should I bother with Exporter anyway?

Thanks

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