Страницы справочника OS X

Эта страница руководства для  версии 10.9 Mac OS X

Читать страницы руководства

Data::Dumper::Concise(3)             User Contributed Perl Documentation            Data::Dumper::Concise(3)



NAME
       Data::Dumper::Concise - Less indentation and newlines plus sub deparsing

SYNOPSIS
         use Data::Dumper::Concise;

         warn Dumper($var);

       is equivalent to:

         use Data::Dumper;
         {
           local $Data::Dumper::Terse = 1;
           local $Data::Dumper::Indent = 1;
           local $Data::Dumper::Useqq = 1;
           local $Data::Dumper::Deparse = 1;
           local $Data::Dumper::Quotekeys = 0;
           local $Data::Dumper::Sortkeys = 1;
           warn Dumper($var);
         }

       So for the structure:

         { foo => "bar\nbaz", quux => sub { "fleem" } };

       Data::Dumper::Concise will give you:

         {
           foo => "bar\nbaz",
           quux => sub {
               use warnings;
               use strict 'refs';
               'fleem';
           }
         }

       instead of the default Data::Dumper output:

         $VAR1 = {
          'quux' => sub { "DUMMY" },
          'foo' => 'bar
         baz'
         };

       (note the tab indentation, oh joy ...)

       If you need to get the underlying Dumper object just call "DumperObject".

       Also try out "DumperF" which takes a "CodeRef" as the first argument to format the output.  For
       example:

         use Data::Dumper::Concise;

         warn DumperF { "result: $_[0] result2: $_[1]" } $foo, $bar;

       Which is the same as:

         warn 'result: ' . Dumper($foo) . ' result2: ' . Dumper($bar);

DESCRIPTION
       This module always exports a single function, Dumper, which can be called with an array of values to
       dump those values.

       It exists, fundamentally, as a convenient way to reproduce a set of Dumper options that we've found
       ourselves using across large numbers of applications, primarily for debugging output.

       The principle guiding theme is "all the concision you can get while still having a useful dump and
       not doing anything cleverer than setting Data::Dumper options" - it's been pointed out to us that
       Data::Dump::Streamer can produce shorter output with less lines of code. We know. This is simpler and
       we've never seen it segfault. But for complex/weird structures, it generally rocks.  You should use
       it as well, when Concise is underkill. We do.

       Why is deparsing on when the aim is concision? Because you often want to know what subroutine refs
       you have when debugging and because if you were planning to eval this back in you probably wanted to
       remove subrefs first and add them back in a custom way anyway. Note that this -does- force using the
       pure perl Dumper rather than the XS one, but I've never in my life seen Data::Dumper show up in a
       profile so "who cares?".

BUT BUT BUT ...
       Yes, we know. Consider this module in the ::Tiny spirit and feel free to write a
       Data::Dumper::Concise::ButWithExtraTwiddlyBits if it makes you happy. Then tell us so we can add it
       to the see also section.

SUGARY SYNTAX
       This package also provides:

       Data::Dumper::Concise::Sugar - provides Dwarn and DwarnS convenience functions

       Devel::Dwarn - shorter form for Data::Dumper::Concise::Sugar

SEE ALSO
       We use for some purposes, and dearly love, the following alternatives:

       Data::Dump - prettiness oriented but not amazingly configurable

       Data::Dump::Streamer - brilliant. beautiful. insane. extensive. excessive. try it.

       JSON::XS - no, really. If it's just plain data, JSON is a great option.

AUTHOR
       mst - Matt S. Trout <mst@shadowcat.co.uk>

CONTRIBUTORS
       frew - Arthur Axel "fREW" Schmidt <frioux@gmail.com>

COPYRIGHT
       Copyright (c) 2010 the Data::Dumper::Concise "AUTHOR" and "CONTRIBUTORS" as listed above.

LICENSE
       This library is free software and may be distributed under the same terms as perl itself.



perl v5.16.2                                     2011-01-20                         Data::Dumper::Concise(3)