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.