Clone - recursively copy Perl datatypes
package Foo; use parent 'Clone'; package main; my $original = Foo->new; $copy = $original->clone; # or use Clone qw(clone); $a = { 'foo' => 'bar', 'move' => 'zig' }; $b = [ 'alpha', 'beta', 'gamma', 'vlissides' ]; $c = Foo->new; $d = clone($a); $e = clone($b); $f = clone($c);
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) };
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 less levels, while dclone() can be faster for structures 4 or more levels deep.
Copyright 2001-2012 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.
Ray Finch <rdf@cpan.org>
<rdf@cpan.org>
Breno G. de Oliveira <garu@cpan.org> and Florian Ragwitz <rafl@debian.org> perform routine maintenance releases since 2012.
<garu@cpan.org>
<rafl@debian.org>
To install Clone, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Clone
CPAN shell
perl -MCPAN -e shell install Clone
For more information on module installation, please visit the detailed CPAN module installation guide.