13 lines
623 B
Text
13 lines
623 B
Text
|
A patch to Perl 5.005_55 by the author implements a core API for
|
||
|
|
weak references. This module is a Perl-level interface to that API,
|
||
|
|
allowing weak references to be created in Perl.
|
||
|
|
|
||
|
|
A weak reference is just like an ordinary Perl reference except
|
||
|
|
that it isn't included in the reference count of the thing referred
|
||
|
|
to. This means that once all references to a particular piece of
|
||
|
|
data are weak, the piece of data is freed and all the weak references
|
||
|
|
are set to undef. This is particularly useful for implementing
|
||
|
|
circular data structures without memory leaks or caches of objects.
|
||
|
|
|
||
|
|
WWW: http://search.cpan.org/dist/WeakRef/
|