Clone::Choose - Choose appropriate clone utility
use Clone::Choose;
my $data = {
value => 42,
href => {
set => [ 'foo', 'bar' ],
value => 'baz',
},
};
my $cloned_data = clone $data;
# it's also possible to use Clone::Choose and pass a clone preference
use Clone::Choose qw(:Storable);
Clone::Choose checks several different modules which provides a
clone() function and selects an appropriate one. The default preferrence
is
Clone
Storable
Clone::PP
This list might evolve in future. Please see "EXPORTS" how to pick a particular one.
Clone::Choose exports clone() by default.
One can explicitly import clone by using
use Clone::Choose qw(clone);
or pick a particular clone implementation
use Clone::Choose qw(:Storable clone);
The exported implementation is resolved dynamically, which means that any using module can either rely on the default backend preferrence or choose a particular one.
This also means, an already chosen import can't be modified like
use Clone::Choose qw(clone :Storable);
When one seriously needs different clone implementations, our recommended way to use them would be:
use Clone::Choose (); # do not import
my ($xs_clone, $st_clone);
{ local @Clone::Choose::BACKENDS = (Clone => "clone"); $xs_clone = Clone::Choose->can("clone"); }
{ local @Clone::Choose::BACKENDS = (Storable => "dclone"); $st_clone = Clone::Choose->can("clone"); }
Don't misinterpret recommended - modifying @Clone::Choose::BACKENDS
has a lot of pitfalls and is unreliable beside such small examples. Do
not hesitate open a request with an appropriate proposal for choosing
implementations dynamically.
The use of @Clone::Choose::BACKENDS is discouraged and will be deprecated
as soon as anyone provides a better idea.
Jens Rehsack <rehsack at cpan dot org>
Stefan Hermes <hermes at cpan dot org>
Please report any bugs or feature requests to
bug-Clone-Choose at rt.cpan.org, or through the web interface at
http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Clone-Choose.
I will be notified, and then you'll automatically be notified of progress
on your bug as I make changes.
You can find documentation for this module with the perldoc command.
perldoc Clone::Choose
You can also look for information at:
-
RT: CPAN's request tracker
-
AnnoCPAN: Annotated CPAN documentation
-
CPAN Ratings
-
Search CPAN
Copyright 2017 Jens Rehsack
Copyright 2017 Stefan Hermes
This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as published by the Free Software Foundation; or the Artistic License.
See http://dev.perl.org/licenses/ for more information.