Re: Deepcopy of complex structures.


Perl: the Markov chain saw
	PerlMonks

Re: Deepcopy of complex structures.

by ihb (Deacon)

on Jan 21, 2003 at 01:01 UTC ( [id://228549]=note: print w/replies, xml )

Need Help??

in reply to Deepcopy of complex structures.

What's wrong with Data::Dumper? Data::Dumper even has switches for the explicit reason of eval()ing and deep-copying.

The biggest flaw in your routine, as far as I can see, is that it doesn't handle circular references. It'll recurse to death upon

  my $aref = [];
  $aref->[0] = $aref;
  deepcopy($aref);
[download]

Hope I've helped,
ihb

Comment on Re: Deepcopy of complex structures. Select or Download Code

Replies are listed 'Best First'.

Re: Re: Deepcopy of complex structures.
by BrowserUk (Patriarch) on Jan 21, 2003 at 01:10 UTC

My main problem with Data::Dumper--beyond the fact that it regularly blows my swap space on relatively small data structures--is that whilst the stringification/ evaling process makes sense if you need to transmit the structure between system, or store it to disk, all I want is an in-memory copy. Preferably as fast as possible, given this is a recursive routine that may be called to process large volumes of structure.

Examine what is said, not who speaks.

The 7th Rule of perl club is -- pearl clubs are easily damaged. Use a diamond club instead.

[reply]

In Section Seekers of Perl Wisdom