| Scope::Guard - lexically scoped resource management |
Scope::Guard - lexically scoped resource management
my $sg = Scope::Guard->new(sub { ... });
# or
my $sg = Scope::Guard->new(\&handler);
$sg->dismiss(); # disable the handler
This module provides a convenient way to perform cleanup or other forms of resource management at the end of a scope. It is particularly useful when dealing with exceptions: the Scope::Guard constructor takes a reference to a subroutine that is guaranteed to be called even if the thread of execution is aborted prematurely. This effectively allows lexically-scoped ``promises'' to be made that are automatically honoured by perl's garbage collector.
For more information, see: http://www.cuj.com/documents/s=8000/cujcexp1812alexandr/
my $sg = Scope::Guard->new(sub { ... });
# or
my $sg = Scope::Guard->new(\&handler);
Create a new Scope::Guard object which calls the supplied handler when its DESTROY method is
called, typically when it goes out of scope.
$sg->dismiss();
# or
$sg->dismiss(1);
Detach the handler from the Scope::Guard object. This revokes the ``promise'' to call the handler when the object is destroyed.
The handler can be re-enabled by calling:
$sg->dismiss(0);
0.03
chocolateboy: <chocolate.boy@email.com>
Copyright (c) 2005-2007, chocolateboy.
This module is free software. It may be used, redistributed and/or modified under the same terms as Perl itself.
| Scope::Guard - lexically scoped resource management |