- DIFFERENCE WITH JSON
- UTF-8 FLAGS
- SEE ALSO
JSON::Syck - JSON is YAML (but consider using JSON::XS instead!)
use JSON::Syck; # no exports by default my $data = JSON::Syck::Load($json); my $json = JSON::Syck::Dump($data); # $file can be an IO object, or a filename my $data = JSON::Syck::LoadFile($file); JSON::Syck::DumpFile($file, $data);
JSON::Syck is a syck implementation of JSON parsing and generation. Because JSON is YAML (http://redhanded.hobix.com/inspect/yamlIsJson.html), using syck gives you a fast and memory-efficient parser and dumper for JSON data representation.
However, a newer module JSON::XS, has since emerged. It is more flexible, efficient and robust, so please consider using it instead of this module.
You might want to know the difference between the JSON module and this one.
Since JSON is a pure-perl module and JSON::Syck is based on libsyck, JSON::Syck is supposed to be very fast and memory efficient. See chansen's benchmark table at http://idisk.mac.com/christian.hansen/Public/perl/serialize.pl
JSON.pm comes with dozens of ways to do the same thing and lots of options, while JSON::Syck doesn't. There's only
Oh, and JSON::Syck doesn't use camelCase method names :-)
For now, when you pass a scalar reference to JSON::Syck, it dereferences to get the actual scalar value.
JSON::Syck raises an exception when you pass in circular references.
If you want to serialize self refernecing stuff, you should use YAML which supports it.
When you pass subroutine reference, JSON::Syck dumps it as null.
By default this module doesn't touch any of utf-8 flags set in strings, and assumes UTF-8 bytes to be passed and emit.
However, when you set
$JSON::Syck::ImplicitUnicode to 1, this module properly decodes UTF-8 binaries and sets UTF-8 flag everywhere, as in:
JSON (UTF-8 bytes) => Perl (UTF-8 flagged) JSON (UTF-8 flagged) => Perl (UTF-8 flagged) Perl (UTF-8 bytes) => JSON (UTF-8 flagged) Perl (UTF-8 flagged) => JSON (UTF-8 flagged)
Unfortunately, there's no implicit way to dump Perl UTF-8 flagged data structure to utf-8 encoded JSON. To do this, simply use Encode module, e.g.:
use Encode; use JSON::Syck qw(Dump); my $json = encode_utf8( Dump($data) );
$JSON::Syck::SingleQuote to 1 will make both
Load expect single-quoted string literals.
Audrey Tang <email@example.com>
Tatsuhiko Miyagawa <firstname.lastname@example.org>
Copyright 2005-2009 by Audrey Tang <email@example.com>.
This software is released under the MIT license cited below.
The libsyck code bundled with this library is released by "why the lucky stiff", under a BSD-style license. See the COPYING file for details.
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