Re: Copying an array or hash


Welcome to the Monastery
	PerlMonks

Re: Copying an array or hash

by bageler (Hermit)

on Dec 05, 2005 at 19:13 UTC ( [id://514208]=note: print w/replies, xml )

Need Help??

in reply to Copying an array or hash

Here's the deep copy sub that I use in some of my objects:

sub deep_copy
{
        my $self = shift;
        my $this = shift;
        unless (ref $this) {
                $this;
        } elsif (ref $this eq 'ARRAY') {
                [map $self->deep_copy($_), @$this];
        } elsif (ref $this eq 'HASH') {
                +{map{$_ => $self->deep_copy($this->{$_})} keys %$this
+};
        }
}
[download]

Here's the sub that calls it:

sub copy
{
        my $self = shift;
        return $self->deep_copy($self);
}
[download]

of course, this works because I assume my object will only either have hashrefs, arrayrefs or scalars.

Comment on Re: Copying an array or hash Select or Download Code

In Section Seekers of Perl Wisdom

Domain Nodelet^?

www.com | www.net | www.org

Node Status^?

node history
Node Type: note [id://514208]
help

Chatterbox^?

How do I use this? • Last hour • Other CB clients

Other Users^?

Others wandering the Monastery: (5)

As of 2024-04-25 14:36 GMT

Sections^?

Information^?

Find Nodes^?

Leftovers^?

Today I Learned

Voting Booth^?

No recent polls found