.\" Automatically generated by Pod::Man 4.14 (Pod::Simple 3.43) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. Capital omega is used to do unbreakable dashes and .\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, .\" nothing in troff, for use with C<>. .tr \(*W- .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' .ie n \{\ . ds -- \(*W- . ds PI pi . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch . ds L" "" . ds R" "" . ds C` "" . ds C' "" 'br\} .el\{\ . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' . ds C` . ds C' 'br\} .\" .\" Escape single quotes in literal strings from groff's Unicode transform. .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" .\" If the F register is >0, we'll generate index entries on stderr for .\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index .\" entries marked with X<> in POD. Of course, you'll have to process the .\" output yourself in some meaningful fashion. .\" .\" Avoid warning from groff about undefined register 'F'. .de IX .. .nr rF 0 .if \n(.g .if rF .nr rF 1 .if (\n(rF:(\n(.g==0)) \{\ . if \nF \{\ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . if !\nF==2 \{\ . nr % 0 . nr F 2 . \} . \} .\} .rr rF .\" ======================================================================== .\" .IX Title "JSON::MultiValueOrdered 3pm" .TH JSON::MultiValueOrdered 3pm "2022-11-20" "perl v5.36.0" "User Contributed Perl Documentation" .\" For nroff, turn off justification. Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" JSON::MultiValueOrdered \- handle JSON like {"a":1, "a":2} .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 2 \& use Test::More tests => 4; \& use JSON::MultiValueOrdered; \& \& my $j = JSON::MultiValueOrdered\->new; \& isa_ok $j, \*(AqJSON::Tiny\*(Aq; \& \& my $data = $j\->decode(<<\*(AqJSON\*(Aq); \& { \& "a": 1, \& "b": 2, \& "a": 3, \& "b": 4 \& } \& JSON \& \& # As you\*(Aqd expect, for repeated values, the last value is used \& is_deeply( \& $data, \& { a => 3, b => 4 }, \& ); \& \& # But hashes within the structure are tied to Tie::Hash::MultiValueOrdered \& is_deeply( \& [ tied(%$data)\->get(\*(Aqb\*(Aq) ], \& [ 2, 4 ], \& ); \& \& # And the extra information from the tied hash is used when re\-encoding \& is( \& $j\->encode($data), \& q({"a":1,"b":2,"a":3,"b":4}), \& ); \& \& done_testing; .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" The \s-1JSON\s0 specification allows keys to be repeated within objects. It remains silent on how repeated keys should be interpreted. Most \s-1JSON\s0 implementations end up choosing just one of the values; sometimes the first, sometimes the last. .PP JSON::MultiValueOrdered is a subclass of JSON::Tiny which treats objects as ordered lists of key-value pairs, with duplicate keys allowed. It achieves this by returning all hashes as tied using Tie::Hash::MultiValueOrdered. While these hashes behave like standard Perl hashes (albeit while preserving the original order of the keys), they provide a tied object interface allowing you to retrieve additional values for each key. .PP JSON::MultiValueOrdered serialisation also serialises these additional values and preserves order. .PP JSON::MultiValueOrdered is a subclass of JSON::Tiny::Subclassable and JSON::Tiny, which is itself a fork of Mojo::JSON. Except where noted, the methods listed below behave identically to the methods of the same names in the superclasses. .SS "Constructor" .IX Subsection "Constructor" .ie n .IP """new(%attributes)""" 4 .el .IP "\f(CWnew(%attributes)\fR" 4 .IX Item "new(%attributes)" .SS "Attributes" .IX Subsection "Attributes" .PD 0 .ie n .IP """pretty""" 4 .el .IP "\f(CWpretty\fR" 4 .IX Item "pretty" .ie n .IP """error""" 4 .el .IP "\f(CWerror\fR" 4 .IX Item "error" .PD .SS "Methods" .IX Subsection "Methods" .ie n .IP """decode($bytes)""" 4 .el .IP "\f(CWdecode($bytes)\fR" 4 .IX Item "decode($bytes)" .PD 0 .ie n .IP """encode($ref)""" 4 .el .IP "\f(CWencode($ref)\fR" 4 .IX Item "encode($ref)" .ie n .IP """false""" 4 .el .IP "\f(CWfalse\fR" 4 .IX Item "false" .ie n .IP """true""" 4 .el .IP "\f(CWtrue\fR" 4 .IX Item "true" .PD .SS "Functions" .IX Subsection "Functions" .ie n .IP """j(\e@array)"" / ""j(\e%hash)"" / ""j($bytes)""" 4 .el .IP "\f(CWj(\e@array)\fR / \f(CWj(\e%hash)\fR / \f(CWj($bytes)\fR" 4 .IX Item "j(@array) / j(%hash) / j($bytes)" Encode or decode \s-1JSON\s0 as applicable. .Sp This function may be exported, but is not exported by default. You may request to import it with a different name: .Sp .Vb 1 \& use JSON::MultiValueOrdered j => { \-as => \*(Aqquick_json\*(Aq }; .Ve .SH "BUGS" .IX Header "BUGS" Please report any bugs to . .SH "SEE ALSO" .IX Header "SEE ALSO" JSON::Tiny::Subclassable, JSON::Tiny, Mojo::JSON. .PP Tie::Hash::MultiValueOrdered. .SH "AUTHOR" .IX Header "AUTHOR" Toby Inkster . .SH "COPYRIGHT AND LICENCE" .IX Header "COPYRIGHT AND LICENCE" This software is copyright (c) 2012\-2013 by Toby Inkster. .PP This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. .SH "DISCLAIMER OF WARRANTIES" .IX Header "DISCLAIMER OF WARRANTIES" \&\s-1THIS PACKAGE IS PROVIDED \*(L"AS IS\*(R" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.\s0