Clone.3pm

Langue: en

Version: 2007-10-15 (mandriva - 01/05/08)

Section: 3 (Bibliothèques de fonctions)

NAME

Clone - recursively copy Perl datatypes

SYNOPSIS

   use Clone;
   
   push @Foo::ISA, 'Clone';
 
   $a = new Foo;
   $b = $a->clone();
   
   # or
 
   use Clone qw(clone);
   
   $a = { 'foo' => 'bar', 'move' => 'zig' };
   $b = [ 'alpha', 'beta', 'gamma', 'vlissides' ];
   $c = new Foo();
 
   $d = clone($a);
   $e = clone($b);
   $f = clone($c);
 
 

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 an optional parameter that can be used to limit the depth of the copy. To duplicate lists, arrays or hashes, pass them in by reference. e.g.

     my $copy = clone (\@array);
 
     # or
 
     my %copy = %{ clone (\%hash) };
 
 

For a slower, but more flexible solution see Storable's dclone().

AUTHOR

Ray Finch, rdf@cpan.org

Copyright 2001 Ray Finch.

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

SEE ALSO

Storable(3).