There's nothing built in. If you want to do this then you'll need to have your constructor stash a copy of each instance as it's built somewhere. Then provide a class method to return or walk that list of instances. 

package Foo;
my @_instances;
sub new {
  ...
  push @_instances, $self;
  return $self;
}

sub zorbnitz { print "Weeble\n"; }

sub for_All_Foos {
  my $class = shift;
  my $code  = shift;

  $code->( $_ ) for @_instances;
}

package main;

$a = Foo->new;
$b = Foo->new;

Foo->for_All_Foos( sub { $_[0]->zorbnitz } );

[download]

Or if you use Class::MethodMaker I believe it'll write something similar for you if you tickle it correctly (I believe its the key specifier).

In reply to Re: looping over class instances by Fletch
in thread looping over class instances by Anonymous Monk

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