+ distro => {
+ ubuntu => '22.04', # jammy LTS 2022-04 eol 2027-04
+ aix => '7.3', # 2021-12 eol 2035?
+ },
+ },
+
+ v5.36 => {
+ new => [
+ ['<code>use v5.36</code>', "use <code>warnings</code>; use feature qw'<code>signatures isa</code>'; no feature qw'<code>indirect multidimensional switch</code>'"],
+ ['<code>use builtin</code>', 'namespace for interpreter functions, such as <code>weaken</code> and <code>blessed</code> from <code>Scalar::Util</code>, <code>ceil</code>/<code>floor</code> from <code>POSIX</code>, and <code>trim</code> like <code>String::Util</code>', {experimental => 'builtin', stable => v5.40}],
+ ['<code>is_bool(!0)</code>', 'distinguish scalar variable types (by <code>builtin</code> functions) for data interoperability', {name => 'is_bool'}],
+ ['<code>for my ($k, $v) (%hash)</code>', 'iterate over multiple values at a time (including <code>builtin::indexed</code> for arrays)', {experimental => 'for_list', feature => 'for_list', stable => v5.40}],
+ ['<code>defer {}</code>', 'queue code to be executed when going out of scope', {feature => 'defer', experimental => 'defer'}],
+ ['<code>try {} finally {}</code>', 'run code at the end of a <code><a href="#try">try</a></code> construct regardless of failure', {name => 'finally', feature => 'try', experimental => 'try', stable => 0}], # not stable in v5.40
+ ['<code>q«…»</code>', 'unicode delimiters for quoting operators', {experimental => 'extra_paired_delimiters'}],
+ ['<code>sub ($var) {!<s>pop</s>}</code>', '<a href="#signatures">signature</a>d subs are stable, but mixing with the arguments array <code>@_</code> remains experimental', {feature => 'signatures', experimental => 'args_array_with_signatures'}],
+ ['<code>$SIG{FPE}</code>', 'floating-point exceptions no longer deferred but delivered immediately like other signals', {name => 'sig_fpe'}],
+ ['perl<code> -g</code>', 'disable input record separator (slurp mode), alias for <code>-0777</code>'],
+ ],
+ unicode => '14.0',
+ release => '2022-05-28',
+ distro => {
+ debian => '12', # bookworm 2023-06
+ ubuntu => '23.04', # lunar upcoming
+ },
+ },
+
+ v5.38 => {
+ new => [
+ ['<code>use feature "module_true"</code>', 'default in use 5.37 and up, also <code>no feature "bareword_filehandles"</code>'],
+ ['<code>sub ($var ||=</code> default<code>)</code>', 'assign values when false (or undefined on <code>//=</code>) instead of omitted'],
+ ['<code>/(*{ … })/</code>', 'optimistic eval: <code>(?{ … })</code> with regex optimisations enabled'],
+ ['<code>class</code>', "define object classes: packages with <code>field</code> variables and <code>method</code> subroutines", {feature => 'class', experimental => 'class'}],
+ ['<code>${^LAST_<wbr>SUCCESSFUL_<wbr>PATTERN}</code>', 'explicit variable to access the previous match as in <code>s//…/</code>'],
+ ['<code>%{^HOOK}</code>', "perform tasks <code>require__before</code> and <code>require__after</code> when calling <code>require</code>"], # also @INC hook enhancements
+ ['<code>PERL_RAND_<wbr>SEED</code>', 'environment variable to set <code>srand</code> random number seed', {dropped => 0}],
+ ['<code>is_tainted</code>', '<code>builtin</code> function to check variable tainting like <code>Scalar::Util::tainted</code>', {dropped => 0, experimental => 'builtin', eg => 'builtin::is_tainted($ENV{PWD}) and say "running perl -T"'}],
+ ['<code>export_lexically</code>', '<code>builtin</code> function to export named functions into the calling scope', {dropped => 0, experimental => 'builtin', eg => 'method import {builtin::export_lexically {map {$_ => $self->can($_)} @_}}'}],
+ ],
+ unicode => '15.0',
+ release => '2023-07-02',
+ },
+
+ v5.40 => {
+ new => [
+ ['<code>use v5.40</code>', 'import <a href="#builtin">builtin</a> functions and enable the <a href="#try">try</a> feature'],
+ ['<code>__CLASS__</code>', 'keyword to reference to the current class name, similar to <code>__PACKAGE__</code>', {feature => 'class'}],
+ ['<code>:reader</code>', 'attribute for <a href="#class">field</a> variables to create corresponding accessor methods', {feature => 'class'}],
+ ['<code>^^</code>', 'higher precedence logical <code>xor</code> operator, as <code>||</code> is to <code>or</code>'],
+ ['perl<code> -M …</code>', 'whitespace allowed after <code>-M</code> options', {dropped => 0}],
+ ['<code>builtin::inf</code>, <code>builtin::nan</code>', 'constants equivalent to special floating point values <em>infinity</em> and <em>Not a Number</em>'],
+ ],
+ modules => [
+ ['Test2::Suite' => 'comprehensive set of test tools for writing unit tests, providing a drop in replacement to <code>Test::More</code>'],
+ ['Term::Table' => 'format rows of data as ASCII tables, as in <a href="#test2_suite">Test2</a> diffs', {dropped => 0}],
+ ],
+ release => '2024-06-09',