SYNOPSIS

     use Data::Dmp; # exports dd() and dmp()
     dd [1, 2, 3]; # prints "[1,2,3]"
     $a = dmp({a => 1}); # -> "{a=>1}"

DESCRIPTION

    Data::Dmp is a Perl dumper like Data::Dumper. It's compact (only about
    175 lines of code long), starts fast and does not use any non-core
    modules except Regexp::Stringify when dumping regexes. It produces
    compact single-line output (similar to Data::Dumper::Concise). It
    roughly has the same speed as Data::Dumper (usually a bit faster for
    smaller structures) and faster than Data::Dump, but does not offer the
    various formatting options. It supports dumping objects, regexes,
    circular structures, coderefs. Its code is first based on Data::Dump: I
    removed all the parts that I don't need, particularly the pretty
    formatting stuffs) and added some features that I need like proper
    regex dumping and coderef deparsing.

FUNCTIONS

 dd($data, ...) => $data ...

    Exported by default. Like Data::Dump's dd (a.k.a. dump), print one or
    more data to STDOUT. Unlike Data::Dump's dd, it always prints and
    return the original data (like XXX), making it convenient to insert
    into expressions. This also removes ambiguity and saves one wantarray()
    call.

 dmp($data, ...) => $str

    Exported by default. Return dump result as string. Unlike Data::Dump's
    dd (a.k.a. dump), it never prints and only return the data.

SETTINGS

 $Data::Dmp::OPT_PERL_VERSION => str (default: 5.010)

    Set target Perl version. If you set this to, say 5.010, then the dumped
    code will keep compatibility with Perl 5.10.0. This is used in the
    following ways:

      * passed to Regexp::Stringify

      * when dumping code references

      For example, in perls earlier than 5.016, feature.pm does not
      understand:

       no feature ':all';

      so we replace it with:

       no feature;

 $Data::Dmp::OPT_REMOVE_PRAGMAS => bool (default: 0)

    If set to 1, then pragmas at the start of coderef dump will be removed.
    Coderef dump is produced by B::Deparse and is of the form like:

     sub { use feature 'current_sub', 'evalbytes', 'fc', 'say', 'state', 'switch', 'unicode_strings', 'unicode_eval'; $a <=> $b }

    If you want to dump short coderefs, the pragmas might be distracting.
    You can turn turn on this option which will make the above dump become:

     sub { $a <=> $b }

    Note that without the pragmas, the dump might be incorrect.

BENCHMARKS

    # COMMAND: devscripts/bench

FAQ

 When to use Data::Dmp? How does it compare to other dumper modules?

    Data::Dmp might be suitable for you if you want a relatively fast
    pure-Perl data structure dumper to eval-able Perl code. It produces
    compact, single-line Perl code but offers little/no formatting options.
    Data::Dmp and Data::Dump module family usually produce Perl code that
    is "more eval-able", e.g. it can recreate circular structure.

    Data::Dump produces visually nicer output (some alignment, use of range
    operator to shorten lists, use of base64 for binary data, etc) but no
    built-in option to produce compact/single-line output. It's more
    suitable for debugging. It's also relatively slow. I usually use its
    variant, Data::Dump::Color, for console debugging.

    Data::Dumper is a core module, offers a lot of formatting options (like
    disabling hash key sorting, setting verboseness/indent level, and so
    on) but you usually have to configure it quite a bit before it does
    exactly like you want (that's why there are modules on CPAN that are
    just wrapping Data::Dumper with some configuration, like
    Data::Dumper::Concise et al). It does not support dumping Perl code
    that can recreate circular structures.

    Of course, dumping to eval-able Perl code is slow (not to mention the
    cost of re-loading the code back to in-memory data, via eval-ing)
    compared to dumping to JSON, YAML, Sereal, or other format. So you need
    to decide first whether this is the appropriate route you want to take.
    (But note that there is also Data::Dumper::Limited and Data::Undump
    which uses a format similar to Data::Dumper but lets you load the
    serialized data without eval-ing them, thus achieving the speed
    comparable to JSON::XS).

SEE ALSO

    Data::Dump and other variations/derivate works in Data::Dump::*.

    Data::Dumper and its variants.

    Data::Printer.

    YAML, JSON, Storable, Sereal, and other serialization formats.

