Clone - phpMan

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 2001-2019 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 AT cpan.org>"

    Breno G. de Oliveira "<garu AT cpan.org>" and Florian Ragwitz
    "<rafl AT debian.org>" perform routine maintenance releases since 2012.