Clone(3) recursively copy Perl datatypes


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;


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) };


Copyright 2001-2015 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 "<[email protected]>"

Breno G. de Oliveira "<[email protected]>" and Florian Ragwitz "<[email protected]>" perform routine maintenance releases since 2012.