InstanceCountingClass - An example metaclass which counts instances
package Foo;
use metaclass 'InstanceCountingClass';
sub new {
my $class = shift;
$class->meta->new_object(@_);
}
# ... meanwhile, somewhere in the code
my $foo = Foo->new();
print Foo->meta->get_count(); # prints 1
my $foo2 = Foo->new();
print Foo->meta->get_count(); # prints 2
# ... etc etc etc
This is a classic example of a metaclass which keeps a count of each instance which is created.
Stevan Little <stevan@iinteractive.com>
Copyright 2006 by Infinity Interactive, Inc.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
