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'
22 Module::CoreList->find_modules(qr/test::h.*::.*s/i, 5.008008);
23 # prints 'Test::Harness::Assert, Test::Harness::Straps'
25 print join ", ", @{ $Module::CoreList::families{5.005} };
26 # prints "5.005, 5.00503, 5.00504"
30 Module::CoreList provides information on which core and dual-life modules shipped
31 with each version of L<perl>.
33 It provides a number of mechanisms for querying this information.
35 There is a utility called L<corelist> provided with this module
36 which is a convenient way of querying from the command-line.
38 There is a functional programming API available for programmers to query
41 Programmers may also query the contained hash structures to find relevant
46 These are the functions that are available, they may either be called as functions or class methods:
48 Module::CoreList::first_release('File::Spec'); # as a function
50 Module::CoreList->first_release('File::Spec'); # class method
54 =item C<first_release( MODULE )>
56 Behaviour since version 2.11
58 Requires a MODULE name as an argument, returns the perl version when that module first
59 appeared in core as ordered by perl version number or undef ( in scalar context )
60 or an empty list ( in list context ) if that module is not in core.
62 =item C<first_release_by_date( MODULE )>
64 Requires a MODULE name as an argument, returns the perl version when that module first
65 appeared in core as ordered by release date or undef ( in scalar context )
66 or an empty list ( in list context ) if that module is not in core.
68 =item C<find_modules( REGEX, [ LIST OF PERLS ] )>
70 Takes a regex as an argument, returns a list of modules that match the regex given.
71 If only a regex is provided applies to all modules in all perl versions. Optionally
72 you may provide a list of perl versions to limit the regex search.
74 =item C<find_version( PERL_VERSION )>
76 Takes a perl version as an argument. Returns that perl version if it exists or C<undef>
79 =item C<is_core( MODULE, [ MODULE_VERSION, [ PERL_VERSION ] ] )>
81 Available in version 2.99 and above.
83 Returns true if MODULE was bundled with the specified version of Perl.
84 You can optionally specify a minimum version of the module,
85 and can also specify a version of Perl.
86 If a version of Perl isn't specified,
87 C<is_core()> will use the numeric version of Perl that is running (ie C<$]>).
89 If you want to specify the version of Perl, but don't care about
90 the version of the module, pass C<undef> for the module version:
92 =item C<is_deprecated( MODULE, PERL_VERSION )>
94 Available in version 2.22 and above.
96 Returns true if MODULE is marked as deprecated in PERL_VERSION. If PERL_VERSION is
97 omitted, it defaults to the current version of Perl.
99 =item C<deprecated_in( MODULE )>
101 Available in version 2.77 and above.
103 Returns the first PERL_VERSION where the MODULE was marked as deprecated. Returns C<undef>
104 if the MODULE has not been marked as deprecated.
106 =item C<removed_from( MODULE )>
108 Available in version 2.32 and above
110 Takes a module name as an argument, returns the first perl version where that module
111 was removed from core. Returns undef if the given module was never in core or remains
114 =item C<removed_from_by_date( MODULE )>
116 Available in version 2.32 and above
118 Takes a module name as an argument, returns the first perl version by release date where that module
119 was removed from core. Returns undef if the given module was never in core or remains
122 =item C<changes_between( PERL_VERSION, PERL_VERSION )>
124 Available in version 2.66 and above.
126 Given two perl versions, this returns a list of pairs describing the changes in
127 core module content between them. The list is suitable for storing in a hash.
128 The keys are library names and the values are hashrefs. Each hashref has an
129 entry for one or both of C<left> and C<right>, giving the versions of the
130 library in each of the left and right perl distributions.
132 For example, it might return these data (among others) for the difference
133 between 5.008000 and 5.008001:
135 'Pod::ParseLink' => { left => '1.05', right => '1.06' },
136 'Pod::ParseUtils' => { left => '0.22', right => '0.3' },
137 'Pod::Perldoc' => { right => '3.10' },
138 'Pod::Perldoc::BaseTo' => { right => undef },
140 This shows us two libraries being updated and two being added, one of which has
141 an undefined version in the right-hand side version.
145 =head1 DATA STRUCTURES
147 These are the hash data structures that are available:
151 =item C<%Module::CoreList::version>
153 A hash of hashes that is keyed on perl version as indicated
154 in $]. The second level hash is module => version pairs.
156 Note, it is possible for the version of a module to be unspecified,
157 whereby the value is C<undef>, so use C<exists $version{$foo}{$bar}> if
158 that's what you're testing for.
160 Starting with 2.10, the special module name C<Unicode> refers to the version of
161 the Unicode Character Database bundled with Perl.
163 =item C<%Module::CoreList::delta>
165 Available in version 3.00 and above.
167 C<%Module::CoreList::version> is implemented via C<Module::CoreList::TieHashDelta>
168 using this hash of delta changes.
170 It is a hash of hashes that is keyed on perl version. Each keyed hash will have the
173 delta_from - a previous perl version that the changes are based on
174 changed - a hash of module/versions that have changed
175 removed - a hash of modules that have been removed
177 =item C<%Module::CoreList::released>
179 Keyed on perl version this contains ISO
180 formatted versions of the release dates, as gleaned from L<perlhist>.
182 =item C<%Module::CoreList::families>
184 New, in 1.96, a hash that
185 clusters known perl releases by their major versions.
187 =item C<%Module::CoreList::deprecated>
189 A hash of hashes keyed on perl version and on module name.
190 If a module is defined it indicates that that module is
191 deprecated in that perl version and is scheduled for removal
192 from core at some future point.
194 =item C<%Module::CoreList::upstream>
196 A hash that contains information on where patches should be directed
197 for each core module.
199 UPSTREAM indicates where patches should go. C<undef> implies
200 that this hasn't been discussed for the module at hand.
201 C<blead> indicates that the copy of the module in the blead
202 sources is to be considered canonical, C<cpan> means that the
203 module on CPAN is to be patched first. C<first-come> means
204 that blead can be patched freely if it is in sync with the
205 latest release on CPAN.
207 =item C<%Module::CoreList::bug_tracker>
209 A hash that contains information on the appropriate bug tracker
210 for each core module.
212 BUGS is an email or url to post bug reports. For modules with
213 UPSTREAM => 'blead', use perl5-porters@perl.org. rt.cpan.org
214 appears to automatically provide a URL for CPAN modules; any value
215 given here overrides the default:
216 http://rt.cpan.org/Public/Dist/Display.html?Name=$ModuleName
222 Module::CoreList currently covers the 5.000, 5.001, 5.002, 5.003_07,
223 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,
224 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,
225 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,
226 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,
227 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,
228 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,
229 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,
230 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,
231 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,
232 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,
233 5.19.9, 5.19.10, 5.19.11, 5.20.0, 5.21.0 and 5.21.1 releases of perl.
237 Moved to Changes file.
241 Richard Clamp E<lt>richardc@unixbeard.netE<gt>
243 Currently maintained by the perl 5 porters E<lt>perl5-porters@perl.orgE<gt>.
247 Copyright (C) 2002-2009 Richard Clamp. All Rights Reserved.
249 This module is free software; you can redistribute it and/or modify it
250 under the same terms as Perl itself.
254 L<corelist>, L<Module::Info>, L<perl>, L<http://perlpunks.de/corelist>