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           $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