NAME

       Clone - recursively copy Perl datatypes

SYNOPSIS

           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;

DESCRIPTION

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

       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.

perl v5.38.2                                       2024-03-31                                         Clone(3pm)