Clone

recursively copy Perl datatypes

Latest version: 0.47 registry icon
Maintenance score
12
Safety score
100
Popularity score
9
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Security
  Vulnerabilities
Version Suggest Low Medium High Critical
0.48_01 0 0 0 0 0
0.47 0 0 0 0 0
0.45 0 0 0 0 0
0.44 0 0 0 0 0
0.43 0 0 0 0 0

Stability
Latest release:

0.47 - This version may not be safe as it has not been updated for a long time. Find out if your coding project uses this component and get notified of any reported security vulnerabilities with Meterian-X Open Source Security Platform

Licensing

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Artistic-1.0   -   Artistic License 1.0

Not a wildcard

Not proprietary

OSI Compliant


GPL-1.0-or-later   -   GNU General Public License v1.0 or later

Not a wildcard

Not proprietary

OSI Compliant



Clone - recursively copy Perl datatypes

Build Status Coverage Status CPAN version

This module provides a clone() method which makes recursive copies of nested hash, array, scalar and reference types, including tied variables and objects.

    use Clone 'clone';

    my $data = {
       set => [ 1 .. 50 ],
       foo => {
           answer => 42,
           object => SomeObject->new,
       },
    };

    my $cloned_data = clone($data);

    $cloned_data->{foo}{answer} = 1;
    print $cloned_data->{foo}{answer};  # '1'
    print $data->{foo}{answer};         # '42'

You can also add it to your class:

    package Foo;
    use parent 'Clone';
    sub new { bless {}, shift }

    package main;

    my $obj = Foo->new;
    my $copy = $obj->clone;

clone() takes a scalar argument and duplicates it. To duplicate lists, arrays or hashes, pass them in by reference, e.g.

    my $copy = clone (\@array);

    # or

    my %copy = %{ clone (\%hash) };

See Also

Storable's dclone() is a flexible solution for cloning variables, albeit slower for average-sized data structures. Simple and naive benchmarks show that Clone is faster for data structures with 3 or fewer levels, while dclone() can be faster for structures 4 or more levels deep.

COPYRIGHT

Copyright 2001-2022 Ray Finch. All Rights Reserved.

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR

Ray Finch <rdf@cpan.org>

Breno G. de Oliveira <garu@cpan.org>, Nicolas Rochelemagne <atoomic@cpan.org> and Florian Ragwitz <rafl@debian.org> perform routine maintenance releases since 2012.