Acme-CPANModules-DumpingDataForDebugging
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NAME
Acme::CPANModules::DumpingDataForDebugging - List of modules and tips
when dumping data structures for debugging
VERSION
This document describes version 0.002 of
Acme::CPANModules::DumpingDataForDebugging (from Perl distribution
Acme-CPANModules-DumpingDataForDebugging), released on 2023-10-29.
DESCRIPTION
This list catalogs some of the modules you can you to dump your data
structures for debugging purposes, so the modules will be judged mostly
by the appropriateness of its output for human viewing (instead of other
criteria like speed, footprint, etc).
ACME::CPANMODULES ENTRIES
Data::Dumper
Author: NWCLARK <https://metacpan.org/author/NWCLARK>
Everybody knows this module and it's core so sometimes it's the only
appropriate choice. However, the default setting is not really
optimized for viewing by human. I suggest you tweak these before
dumping your data:
* Set $Data::Dumper::Useqq to 1.
By default, Data::Dumper quotes strings using single-quotes and does
not quote things like "\n" and "\b" making it difficult to spot
special characters.
Data::Dump
Author: GARU <https://metacpan.org/author/GARU>
A data dumper that produces nicer Perl code output, with features
like vertical alignment of "=>" when dumping hashes, compacting
sequences like 1,2,3,4,5,6 to 1..6, compacting repeating characters
in string like "ccccccccccccccccccccc" to ("c" x 21), and so on.
It tries harder to produce Perl code that generates the original
data structure, particularly with circular references. But with
interlinked references like trees, Data::Dumper might be more
helpful in showing you which references get mentioned where. For
example this data:
$tree = {children=>[{children=>[{}]}, {children=>[]}]};
$tree->{children}[0]{parent}=$tree;
$tree->{children}[1]{parent}=$tree;
$tree->{children}[0]{children}[0]{parent} = $tree->{children}[0];
Data::Dump will produce:
do {
my $a = {
children => [
{ children => [{ parent => 'fix' }], parent => 'fix' },
{ children => [], parent => 'fix' },
],
};
$a->{children}[0]{children}[0]{parent} = $a->{children}[0];
$a->{children}[0]{parent} = $a;
$a->{children}[1]{parent} = $a;
$a;
}
while Data::Dumper will produce:
$VAR1 = {
'children' => [
{
'children' => [
{
'parent' => $VAR1->{'children'}[0]
}
],
'parent' => $VAR1
},
{
'parent' => $VAR1,
'children' => []
}
]
};
Data::Dump::Color
Author: PERLANCAR <https://metacpan.org/author/PERLANCAR>
A modification to Data::Dump which adds color (and color theme)
support, as well as other visual aids like depth and array
index/hash pair count indicator. It's usually my go-to module for
debugging.
Data::Dumper::Compact
Author: MSTROUT <https://metacpan.org/author/MSTROUT>
A relatively recent module by MSTROUT. I will need to use this more
to see if I really like the output, but so far I do.
XXX Author: INGY <https://metacpan.org/author/INGY>
A nice little dumper module from the creator of YAML. Obviously, it
uses YAML output by default but it's configurable to dump in other
formats. For example:
PERL_XXX_DUMPER=Data::Dump::Color
It's main selling point is that the dumper function returns the
original arguments so the dumping can be done in various places in
code, making it more convenient. More (if not all) dumpers should do
this too.
Data::Printer
Author: GARU <https://metacpan.org/author/GARU>
Favorites among many Perl programmers, it sports colors, array index
indicator, as well as nice object dumper showing methods and
inheritance information. It's also very customizable. It uses its
own format though, and my preference for dumping is the Perl format
(with additional informations/hints as comments) so I've never used
it in my daily coding activities. I probably should though.
JSON::Color
Author: PERLANCAR <https://metacpan.org/author/PERLANCAR>
JSON is a limited format; it cannot represent many things that Perl
supports e.g. globs, circular references, or even ASCII NUL. But if
you are working only with JSON-able data, this JSON dumping module
adds color output.
YAML::Tiny::Color
Author: SHARYANTO <https://metacpan.org/author/SHARYANTO>
FAQ
What is an Acme::CPANModules::* module?
An Acme::CPANModules::* module, like this module, contains just a list
of module names that share a common characteristics. It is a way to
categorize modules and document CPAN. See Acme::CPANModules for more
details.
What are ways to use this Acme::CPANModules module?
Aside from reading this Acme::CPANModules module's POD documentation,
you can install all the listed modules (entries) using cpanm-cpanmodules
script (from App::cpanm::cpanmodules distribution):
% cpanm-cpanmodules -n DumpingDataForDebugging
Alternatively you can use the cpanmodules CLI (from App::cpanmodules
distribution):
% cpanmodules ls-entries DumpingDataForDebugging | cpanm -n
or Acme::CM::Get:
% perl -MAcme::CM::Get=DumpingDataForDebugging -E'say $_->{module} for @{ $LIST->{entries} }' | cpanm -n
or directly:
% perl -MAcme::CPANModules::DumpingDataForDebugging -E'say $_->{module} for @{ $Acme::CPANModules::DumpingDataForDebugging::LIST->{entries} }' | cpanm -n
This Acme::CPANModules module also helps lcpan produce a more meaningful
result for "lcpan related-mods" command when it comes to finding related
modules for the modules listed in this Acme::CPANModules module. See
App::lcpan::Cmd::related_mods for more details on how "related modules"
are found.
HOMEPAGE
Please visit the project's homepage at
<https://metacpan.org/release/Acme-CPANModules-DumpingDataForDebugging>.
SOURCE
Source repository is at
<https://github.com/perlancar/perl-Acme-CPANModules-DumpingDataForDebugg
ing>.
SEE ALSO
Acme::CPANModules - about the Acme::CPANModules namespace
cpanmodules - CLI tool to let you browse/view the lists
AUTHOR
perlancar <perlancar@cpan.org>
CONTRIBUTING
To contribute, you can send patches by email/via RT, or send pull
requests on GitHub.
Most of the time, you don't need to build the distribution yourself. You
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