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Full Discussion: Print Entire hash list (hash of hashes)
Top Forums Shell Programming and Scripting Print Entire hash list (hash of hashes) Post 302222213 by buffoonix on Wednesday 6th of August 2008 08:40:27 AM
Old 08-06-2008
I guess you are talking of a Perl script here.
What you see is when you try to print a Perl hasref.
To see its contents you need to derefernce it like e.g.
Code:
print map "$_\n", keys %{$some_hashref};

The easiest way to gain instant insight into your nested data structures
would be to load your script into the Perl debugger
(just issue "$ perl -d /path/to/yourscript.pl")
Then continue to a line (type c line#) where your data structure
has been built up or autovivified.
Then type "|x $hashref" or "|x \%hash" and page through your LoL.
You also could use the
Code:
Data::Dumper

module in your script.
See its POD for details.
Oh no, I hate those silly auto-inserted smileys as in Dumper above)
Last edited by jim mcnamara; 08-06-2008 at 10:53 AM..
 

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LEARN ABOUT CENTOS

template::plugin::dumper

Template::Plugin::Dumper(3)				User Contributed Perl Documentation			       Template::Plugin::Dumper(3)

NAME

       Template::Plugin::Dumper - Plugin interface to Data::Dumper

SYNOPSIS

	   [% USE Dumper %]

	   [% Dumper.dump(variable) %]
	   [% Dumper.dump_html(variable) %]

DESCRIPTION

       This is a very simple Template Toolkit Plugin Interface to the Data::Dumper module.  A "Dumper" object will be instantiated via the
       following directive:

	   [% USE Dumper %]

       As a standard plugin, you can also specify its name in lower case:

	   [% USE dumper %]

       The "Data::Dumper" "Pad", "Indent" and "Varname" options are supported as constructor arguments to affect the output generated.	See
       Data::Dumper for further details.

	   [% USE dumper(Indent=0, Pad="<br>") %]

       These options can also be specified in lower case.

	   [% USE dumper(indent=0, pad="<br>") %]

METHODS

       There are two methods supported by the "Dumper" object.	Each will output into the template the contents of the variables passed to the
       object method.

   dump()
       Generates a raw text dump of the data structure(s) passed

	   [% USE Dumper %]
	   [% Dumper.dump(myvar) %]
	   [% Dumper.dump(myvar, yourvar) %]

   dump_html()
       Generates a dump of the data structures, as per dump(), but with the characters <, > and & converted to their equivalent HTML entities and
       newlines converted to <br>.

	   [% USE Dumper %]
	   [% Dumper.dump_html(myvar) %]

AUTHOR

       Simon Matthews <sam@tt2.org>

COPYRIGHT

       Copyright (C) 2000 Simon Matthews.  All Rights Reserved.

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

SEE ALSO

       Template::Plugin, Data::Dumper

perl v5.16.3							    2011-12-20					       Template::Plugin::Dumper(3)
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