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.\" ========================================================================
.\"
.IX Title "Clone 3"
.TH Clone 3 "2009-01-19" "perl v5.8.8" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Clone \- recursively copy Perl datatypes
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&  use Clone;
\&  
\&  push @Foo::ISA, \*(AqClone\*(Aq;
\&
\&  $a = new Foo;
\&  $b = $a\->clone();
\&  
\&  # or
\&
\&  use Clone qw(clone);
\&  
\&  $a = { \*(Aqfoo\*(Aq => \*(Aqbar\*(Aq, \*(Aqmove\*(Aq => \*(Aqzig\*(Aq };
\&  $b = [ \*(Aqalpha\*(Aq, \*(Aqbeta\*(Aq, \*(Aqgamma\*(Aq, \*(Aqvlissides\*(Aq ];
\&  $c = new Foo();
\&
\&  $d = clone($a);
\&  $e = clone($b);
\&  $f = clone($c);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module provides a \fIclone()\fR method which makes recursive
copies of nested hash, array, scalar and reference types, 
including tied variables and objects.
.PP
\&\fIclone()\fR 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.
.PP
.Vb 1
\&    my $copy = clone (\e@array);
\&
\&    # or
\&
\&    my %copy = %{ clone (\e%hash) };
.Ve
.PP
For a slower, but more flexible solution see Storable's \fIdclone()\fR.
.SH "AUTHOR"
.IX Header "AUTHOR"
Ray Finch, rdf@cpan.org
.PP
Copyright 2001 Ray Finch.
.PP
This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fIStorable\fR\|(3).