icon Top 9 categories map      RocketAware > Perl >

How do I print out or copy a recursive data structure?

Tips: Browse or Search all pages for efficient awareness of Perl functions, operators, and FAQs.



Home

Search Perl pages


Subjects

By activity
Professions, Sciences, Humanities, Business, ...

User Interface
Text-based, GUI, Audio, Video, Keyboards, Mouse, Images,...

Text Strings
Conversions, tests, processing, manipulation,...

Math
Integer, Floating point, Matrix, Statistics, Boolean, ...

Processing
Algorithms, Memory, Process control, Debugging, ...

Stored Data
Data storage, Integrity, Encryption, Compression, ...

Communications
Networks, protocols, Interprocess, Remote, Client Server, ...

Hard World
Timing, Calendar and Clock, Audio, Video, Printer, Controls...

File System
Management, Filtering, File & Directory access, Viewers, ...

    

How do I print out or copy a recursive data structure?

The Data::Dumper module on CPAN is nice for printing out data structures, and FreezeThaw for copying them. For example:

    use FreezeThaw qw(freeze thaw);
    $new = thaw freeze $old;

Where $old can be (a reference to) any kind of data structure you'd like. It will be deeply copied.


Source: Perl FAQ: Data Manipulation
Copyright: Copyright (c) 1997 Tom Christiansen and Nathan Torkington.
Next: How do I define methods for every class/object?

Previous: How do I keep persistent data across program calls?



(Corrections, notes, and links courtesy of RocketAware.com)


[Overview Topics]

Up to: Data structures (In memory)




Rapid-Links: Search | About | Comments | Submit Path: RocketAware > Perl > perlfaq4/How_do_I_print_out_or_copy_a_rec.htm
RocketAware.com is a service of Mib Software
Copyright 2000, Forrest J. Cavalier III. All Rights Reserved.
We welcome submissions and comments