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JSON::Syck(3)                        User Contributed Perl Documentation                       JSON::Syck(3)



NAME
       JSON::Syck - JSON is YAML (but consider using JSON::XS instead!)

SYNOPSIS
           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);

           # Dump into a pre-existing buffer
           my $json;
           JSON::Syck::DumpInto(\$json, $data);

DESCRIPTION
       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 memoryefficient
       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.

DIFFERENCE WITH JSON
       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 "Load" and "Dump".

       Oh, and JSON::Syck doesn't use camelCase method names :-)

REFERENCES
   SCALAR REFERENCE
       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.

   SUBROUTINE REFERENCE
       When you pass subroutine reference, JSON::Syck dumps it as null.

UTF-8 FLAGS
       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) );

       Alternatively you can use Encode::JavaScript::UCS to encode Unicode strings as in %uXXXX form.

         use Encode;
         use Encode::JavaScript::UCS;
         use JSON::Syck qw(Dump);

         my $json_unicode_escaped = encode( 'JavaScript-UCS', Dump($data) );

QUOTING
       According to the JSON specification, all JSON strings are to be double-quoted.  However, when
       embedding JavaScript in HTML attributes, it may be more convenient to use single quotes.

       Set $JSON::Syck::SingleQuote to 1 will make both "Dump" and "Load" expect single-quoted string
       literals.

BUGS
       Dumping into tied (or other magic variables) with "DumpInto" might not work properly in all cases.

       When dumping with "DumpFile", some spacing might be wrong and $JSON::Syck::SingleQuote might be
       handled incorrectly.

SEE ALSO
       JSON::XS, YAML::Syck

AUTHORS
       Audrey Tang <cpan@audreyt.org>

       Tatsuhiko Miyagawa <miyagawa@gmail.com>

COPYRIGHT
       Copyright 2005-2009 by Audrey Tang <cpan@audreyt.org>.

       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.

   The "MIT" License
       Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
       associated documentation files (the "Software"), to deal in the Software without restriction,
       including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
       and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
       subject to the following conditions:

       The above copyright notice and this permission notice shall be included in all copies or substantial
       portions of the Software.

       THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
       LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
       IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
       LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
       WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.



perl v5.16.2                                     2012-09-20                                    JSON::Syck(3)