3 Module::CoreList - what modules shipped with versions of perl
9 print $Module::CoreList::version{5.00503}{CPAN}; # prints 1.48
11 print Module::CoreList->first_release('File::Spec'); # prints 5.00405
12 print Module::CoreList->first_release_by_date('File::Spec'); # prints 5.005
13 print Module::CoreList->first_release('File::Spec', 0.82); # prints 5.006001
15 if (Module::CoreList::is_core('File::Spec')) {
16 print "File::Spec is a core module\n";
19 print join ', ', Module::CoreList->find_modules(qr/Data/);
20 # prints 'Data::Dumper'
21 print join ', ', Module::CoreList->find_modules(qr/test::h.*::.*s/i, 5.008008);
22 # prints 'Test::Harness::Assert, Test::Harness::Straps'
24 print join ", ", @{ $Module::CoreList::families{5.005} };
25 # prints "5.005, 5.00503, 5.00504"
29 Module::CoreList provides information on which core and dual-life modules shipped
30 with each version of L<perl>.
32 It provides a number of mechanisms for querying this information.
34 There is a utility called L<corelist> provided with this module
35 which is a convenient way of querying from the command-line.
37 There is a functional programming API available for programmers to query
40 Programmers may also query the contained hash structures to find relevant
45 These are the functions that are available, they may either be called as functions or class methods:
47 Module::CoreList::first_release('File::Spec'); # as a function
49 Module::CoreList->first_release('File::Spec'); # class method
53 =item C<first_release( MODULE )>
55 Behaviour since version 2.11
57 Requires a MODULE name as an argument, returns the perl version when that module first
58 appeared in core as ordered by perl version number or undef ( in scalar context )
59 or an empty list ( in list context ) if that module is not in core.
61 =item C<first_release_by_date( MODULE )>
63 Requires a MODULE name as an argument, returns the perl version when that module first
64 appeared in core as ordered by release date or undef ( in scalar context )
65 or an empty list ( in list context ) if that module is not in core.
67 =item C<find_modules( REGEX, [ LIST OF PERLS ] )>
69 Takes a regex as an argument, returns a list of modules that match the regex given.
70 If only a regex is provided applies to all modules in all perl versions. Optionally
71 you may provide a list of perl versions to limit the regex search.
73 =item C<find_version( PERL_VERSION )>
75 Takes a perl version as an argument. Returns that perl version if it exists or C<undef>
78 =item C<is_core( MODULE, [ MODULE_VERSION, [ PERL_VERSION ] ] )>
80 Available in version 2.99 and above.
82 Returns true if MODULE was bundled with the specified version of Perl.
83 You can optionally specify a minimum version of the module,
84 and can also specify a version of Perl.
85 If a version of Perl isn't specified,
86 C<is_core()> will use the numeric version of Perl that is running (ie C<$]>).
88 If you want to specify the version of Perl, but don't care about
89 the version of the module, pass C<undef> for the module version:
91 =item C<is_deprecated( MODULE, PERL_VERSION )>
93 Available in version 2.22 and above.
95 Returns true if MODULE is marked as deprecated in PERL_VERSION. If PERL_VERSION is
96 omitted, it defaults to the current version of Perl.
98 =item C<deprecated_in( MODULE )>
100 Available in version 2.77 and above.
102 Returns the first PERL_VERSION where the MODULE was marked as deprecated. Returns C<undef>
103 if the MODULE has not been marked as deprecated.
105 =item C<removed_from( MODULE )>
107 Available in version 2.32 and above
109 Takes a module name as an argument, returns the first perl version where that module
110 was removed from core. Returns undef if the given module was never in core or remains
113 =item C<removed_from_by_date( MODULE )>
115 Available in version 2.32 and above
117 Takes a module name as an argument, returns the first perl version by release date where that module
118 was removed from core. Returns undef if the given module was never in core or remains
121 =item C<changes_between( PERL_VERSION, PERL_VERSION )>
123 Available in version 2.66 and above.
125 Given two perl versions, this returns a list of pairs describing the changes in
126 core module content between them. The list is suitable for storing in a hash.
127 The keys are library names and the values are hashrefs. Each hashref has an
128 entry for one or both of C<left> and C<right>, giving the versions of the
129 library in each of the left and right perl distributions.
131 For example, it might return these data (among others) for the difference
132 between 5.008000 and 5.008001:
134 'Pod::ParseLink' => { left => '1.05', right => '1.06' },
135 'Pod::ParseUtils' => { left => '0.22', right => '0.3' },
136 'Pod::Perldoc' => { right => '3.10' },
137 'Pod::Perldoc::BaseTo' => { right => undef },
139 This shows us two libraries being updated and two being added, one of which has
140 an undefined version in the right-hand side version.
144 =head1 DATA STRUCTURES
146 These are the hash data structures that are available:
150 =item C<%Module::CoreList::version>
152 A hash of hashes that is keyed on perl version as indicated
153 in $]. The second level hash is module => version pairs.
155 Note, it is possible for the version of a module to be unspecified,
156 whereby the value is C<undef>, so use C<exists $version{$foo}{$bar}> if
157 that's what you're testing for.
159 Starting with 2.10, the special module name C<Unicode> refers to the version of
160 the Unicode Character Database bundled with Perl.
162 =item C<%Module::CoreList::delta>
164 Available in version 3.00 and above.
166 C<%Module::CoreList::version> is implemented via C<Module::CoreList::TieHashDelta>
167 using this hash of delta changes.
169 It is a hash of hashes that is keyed on perl version. Each keyed hash will have the
172 delta_from - a previous perl version that the changes are based on
173 changed - a hash of module/versions that have changed
174 removed - a hash of modules that have been removed
176 =item C<%Module::CoreList::released>
178 Keyed on perl version this contains ISO
179 formatted versions of the release dates, as gleaned from L<perlhist>.
181 =item C<%Module::CoreList::families>
183 New, in 1.96, a hash that
184 clusters known perl releases by their major versions.
186 =item C<%Module::CoreList::deprecated>
188 A hash of hashes keyed on perl version and on module name.
189 If a module is defined it indicates that that module is
190 deprecated in that perl version and is scheduled for removal
191 from core at some future point.
193 =item C<%Module::CoreList::upstream>
195 A hash that contains information on where patches should be directed
196 for each core module.
198 UPSTREAM indicates where patches should go. C<undef> implies
199 that this hasn't been discussed for the module at hand.
200 C<blead> indicates that the copy of the module in the blead
201 sources is to be considered canonical, C<cpan> means that the
202 module on CPAN is to be patched first. C<first-come> means
203 that blead can be patched freely if it is in sync with the
204 latest release on CPAN.
206 =item C<%Module::CoreList::bug_tracker>
208 A hash that contains information on the appropriate bug tracker
209 for each core module.
211 BUGS is an email or url to post bug reports. For modules with
212 UPSTREAM => 'blead', use perl5-porters@perl.org. rt.cpan.org
213 appears to automatically provide a URL for CPAN modules; any value
214 given here overrides the default:
215 http://rt.cpan.org/Public/Dist/Display.html?Name=$ModuleName
221 Module::CoreList currently covers the 5.000, 5.001, 5.002, 5.003_07,
222 5.004, 5.004_05, 5.005, 5.005_03, 5.005_04, 5.6.0, 5.6.1, 5.6.2, 5.7.3,
223 5.8.0, 5.8.1, 5.8.2, 5.8.3, 5.8.4, 5.8.5, 5.8.6, 5.8.7, 5.8.8, 5.8.9,
224 5.9.0, 5.9.1, 5.9.2, 5.9.3, 5.9.4, 5.9.5, 5.10.0, 5.10.1, 5.11.0, 5.11.1,
225 5.11.2, 5.11.3, 5.11.4, 5.11.5, 5.12.0, 5.12.1, 5.12.2, 5.12.3, 5.12.4,
226 5.12.5, 5.13.0, 5.13.1, 5.13.2, 5.13.3, 5.13.4, 5.13.5, 5.13.6, 5.13.7,
227 5.13.8, 5.13.9, 5.13.10, 5.13.11, 5.14.0, 5.14.1, 5.14.2 5.14.3, 5.14.4,
228 5.15.0, 5.15.1, 5.15.2, 5.15.3, 5.15.4, 5.15.5, 5.15.6, 5.15.7, 5.15.8,
229 5.15.9, 5.16.0, 5.16.1, 5.16.2, 5.16.3, 5.17.0, 5.17.1, 5.17.2, 5.17.3,
230 5.17.4, 5.17.5, 5.17.6, 5.17.7, 5.17.8, 5.17.9, 5.17.10, 5.17.11, 5.18.0,
231 5.19.0, 5.19.1, 5.19.2, 5.19.3, 5.19.4, 5.19.5, 5.19.6, 5.19.7, 5.19.8,
232 5.19.9, 5.19.10, 5.19.11 and 5.20.0 releases of perl.
236 Moved to Changes file.
240 Richard Clamp E<lt>richardc@unixbeard.netE<gt>
242 Currently maintained by the perl 5 porters E<lt>perl5-porters@perl.orgE<gt>.
246 Copyright (C) 2002-2009 Richard Clamp. All Rights Reserved.
248 This module is free software; you can redistribute it and/or modify it
249 under the same terms as Perl itself.
253 L<corelist>, L<Module::Info>, L<perl>, L<http://perlpunks.de/corelist>