Regexp::Copy(3pm)
NAME
Regexp::Copy - copy Regexp objects
SYNOPSIS
use Regexp::Copy qw( re_copy ); my $re1 = qr/Hello!/; my $re2 = qr/Goodbye!/; re_copy($re1, $re2); print "ok\n" if 'Goodbye!' =~ $re1;
DESCRIPTION
"Regexp::Copy" allows you to copy the contents of one Regexp object to
another. A problem that I have found with the qr// operator is that
the Regexp objects that it creates are is impossible to dereference.
This causes problems if you want to change the data in the regexp
without losing the reference to it. Its impossible. Regexp::Copy
allows you to change the Regexp by copying one object created through
qr// to another.
This module came about through discussions on the London.pm mailing
list in regards to attempts various people had made to serialize
objects with qr// created Regexp objects in them. The Regex::Copy
distribution also loads Regexp::Storable, which provides hooks to allow
the Storable persistence method to freeze and thaw Regexp objects
created by qr//.
FUNCTIONS
- re_copy(FROM, TO)
- The "re_copy" function copies the regular expression magic
contained within the variable FROM to the variable named in TO.
THANKS TO
Piers Cawley, who provided the magic Pixie::Info code, that forms the
basis of Regexp::Copy.
AUTHOR
James A. Duncan <jduncan@fotango.com>
COPYRIGHT
Copyright 2002 All Rights Reserved.
- This module is released under the same license as Perl itself.