+{
v5.6 => {
new => [
- ['<code>use utf8</code>'],
- ['<code>\N{named character}</code>'],
- ['<code>our</code>'],
- ['<code>v1.2.3</code>'],
- ['<code>sub :locked :method</code>'],
- ['<code>open $fh, $mode, $expr</code>'],
+ ['<code>use warnings</code>', 'pragma to enable warnings in lexical scope'],
+ ['<code>use utf8</code>', 'experimental unicode semantics <small>(completed in v5.8)</small>', v5.8],
+ ['<code>use charnames</code>', 'string escape <code>\N{}</code> to insert named character'],
+ ['<code>our</code>', 'declare global variables'],
+ ['<code>v1.2.3</code>', q"represent strings as vector of ordinals, useful in version numbers (<code>printf '%vd'</code> to display)"],
+ ['<code>0b0</code>', q"binary numbers in literals, <code>printf '%b'</code>, and <code>oct</code>"],
+ ['<code>sub :lvalue</code>', 'subroutine attribute to return a modifiable value', v5.20],
+# ['<code>sub :locked :method</code>', 'syntax to declare subroutine attributes'], # can be inferred from :lvalue support
+ ['<code>open my $fh, $mode, $expr</code>', 'file handles in scoped scalars, third argument for unambiguous file name'],
+ [q"<code>pack 'q'</code>", '64-bit integer support (also large files >2GiB)', v5.8.1],
+ ['<code>sort $coderef ()</code>', 'comparison function can be a subroutine reference; prototype <code>($$)</code> to pass elements as normal <code>@_</code>'],
+ ['<code>CHECK {}</code>', 'special block called at end of compilation'],
+ ['<code>/[[:…:]]/</code>', 'POSIX character class syntax such as <code>/[[:alpha:]]/</code>'],
+ # quite a lot more, but leave it at this
],
release => '2000-03-23',
distro => {
debian => 'woody',
- redhat => '2.1',
+ rhel => '2', # v5.6.0; also in red hat 7.0
+ solaris => '9', # v5.6.1; 2002-05 eol 2014-10
},
unicode => '3.0.1',
},
v5.8 => {
new => [
- ['unicode overhaul'],
- ['PerlIO'],
+ [q"<code>no utf8</code>", 'full unicode support, <code>utf8</code> pragma only for script encoding'],
+ [q"<code>binmode $fh, ':perlio'</code>", 'file handle behaviour altered by PerlIO layers'],
+ [q"<code>open $fh, '-|', @cmd</code>", 'open list to fork a command without spawning a shell'],
+ [q"<code>open $fh, '>', \$var</code>", 'perl scalars as virtual files'],
+ [q"<code>printf '%1$s', @args</code>", 'syntax to use parameters out of order'],
+ [q"<code>1_2_3 == 123</code>", 'underscores between digits allowed in numeric constants'],
+# [q"<code>use if</code>", 'conditional module inclusion'], # also installable in earlier versions
],
release => '2002-07-18',
distro => {
debian => 'sarge',
- redhat => '3.9',
+ rhel => '3', # v5.8.0; v5.8.8 in RHEL6 (2007-2014)
+ solaris => '10', # v5.8.4; 2005-01 eol 2021-01
+ centos => '3-5', # v5.8.0 in v3 (2004-03); v5.8.8 in v5 (eol 2017-03)
},
unicode => '3.2.0',
},
v5.10 => {
new => [
['<code>//</code>', 'defined-or operator'],
- ['<code>~~</code>', 'smart-match operator to compare different data types'],
- ['<code>given</code>', 'switch statement to smart-match with <code>when</code>/<code>default</code>'],
+ ['<code>~~</code>', 'smart-match operator to compare different data types <small>(updated in v5.10.1)</small>', 'experimental::smartmatch'],
+ ['<code>given</code>', 'switch statement to smart-match with <code>when</code>/<code>default</code>', 'experimental::smartmatch'],
['<code>/(?<name>)/</code>', 'named capture buffers into <code>%+</code>'],
['<code>s/keep\K//</code>', 'floating positive lookbehind, efficient alternative for <code>s/(keep)/$1/</code>'],
['<code>/\v/, /\h/</code>', 'vertical and horizontal whitespace escapes'],
- ['<code>my $_</code>', 'lexically scoped version of the default variable'],
+ ['<code>my $_</code>', 'lexically scoped version of the default variable', 'experimental::lexical_topic'],
],
release => '2007-12-18',
distro => {
debian => 'lenny',
- redhat => '6.5',
+ rhel => '6', # v5.10.1
+ centos => '6', # v5.10.1 (2011-07 eol 2020-11)
},
unicode => '5.0.0',
},
['<code>...</code>', 'yada-yada operator: code placeholder'],
['<code>use 5.012</code>', 'Implicit <code>strict</code> if use VERSION >= v5.12'],
['<code>… when</code>', '<code>when</code> is now allowed to be used as a statement modifier'],
+ [q"<code>use overload 'qr'</code>", 'customisable conversion to regular expressions'],
+ ['<code>/\N/</code>', 'inverse \n to match any character except newline regardless of <code>/s</code>', v5.18],
],
release => '2010-04-12',
unicode => '5.2',
+ distro => {
+ solaris => '11', # also v5.8.4; 2010-11 eol 2024-11
+ },
},
v5.14 => {
new => [
['<code>s///r</code>', 'non-destructive substitution'],
['<code>/(?^)/</code>', 'construct to reset to default modifiers'],
- ['<code>/(?{ m// })/</code>', 'regular expressions can be nested in <code>/(?{})/</code> and <code>/(??{})/</code>'],
- ["<code>use re '/flags'</code>", 'customize default modifiers'],
- ['<code>each $ref</code> e.a.', 'array and hash container functions accept references'],
+ ['<code>/(?{ m() })/</code>', 'regular expressions can be nested in <code>/(?{})/</code> and <code>/(??{})/</code>', v5.20],
+ [q"<code>use re '/flags'</code>", 'customise default modifiers'],
+ ['<code>each $ref</code> e.a.', 'array and hash container functions accept references', ''],
['<code>FH->method</code>', 'filehandle method calls load IO::File on demand (eg. <code>STDOUT->flush</code>)'],
],
release => '2011-05-14',
new => [
['<code>__SUB__</code>', 'current subroutine reference'],
['<code>fc, "\F"</code>', 'unicode foldcase to compare case-insensitively'],
- ['<code>"\N{}"</code>', 'automatic use charnames qw( :full :short )'],
+ ['<code>"\N{}"</code>', 'automatic <code>use charnames qw( :full :short )</code>'],
],
release => '2012-05-20',
distro => {
- redhat => '7.0',
+ rhel => '7', # v5.16.3
+ centos => '7', # v5.16.3 (2014-07 eol 2024-06)
},
unicode => '6.1',
},
v5.18 => {
new => [
['<code>${^LAST_FH}</code>', 'last read filehandle (used by <code>$.</code>)'],
- ['<code>/(?[ a + b ])/</code>', 'regex set operations (character substraction -, unions &)'],
- ['<code>my sub foo</code>', 'lexical subroutines (also state, our)'],
+ ['<code>/(?[ a + b ])/</code>', 'regex set operations (character substraction <code>-</code>, unions <code>&</code>)', 'experimental::regex_sets'],
+ ['<code>my sub</code>', 'lexical subroutines (also <code>state</code>, <code>our</code>)', 'experimental::lexical_subs'],
['<code>next $expression</code>', 'loop controls allow runtime expressions'],
- [q(<code>no warnings 'experimental::…'</code>), 'mechanism for experimental features, as of now required for smartmatch'],
+ [q"<code>no warnings 'experimental::…'</code>", 'mechanism for experimental features, as of now required for smartmatch'],
],
release => '2013-05-18',
- distro => {
- debian => 'jessie',
- },
unicode => '6.2',
},
v5.20 => {
new => [
- ['<code>sub ($var)</code>', 'subroutine signatures'],
+ ['<code>sub ($var)</code>', 'subroutine signatures', 'experimental::signatures'],
['<code>%hash{…}</code>', 'hash slices return key+value pairs'],
- ['<code>[]->@*</code>', 'postfix dereferencing (also e.g. <code>$scalar->$*</code> for <code>$$scalar</code>)'],
- [q(<code>use warnings 'once'; $a</code>), 'variables $a and $b are exempt from <em>used once</em> warnings'],
+ ['<code>[]->@*</code>', 'postfix dereferencing (also e.g. <code>$scalar->$*</code> for <code>$$scalar</code>)', 'experimental::postderef'],
+ [q"<code>use warnings 'once'; $a</code>", 'variables $a and $b are exempt from <em>used once</em> warnings'],
],
unicode => '6.3',
release => '2014-05-27',
+ distro => {
+ debian => 'jessie',
+ },
+ },
+
+ v5.22 => {
+ new => [
+ ['<code>\$alias =</code>', 'aliasing via reference'],
+ ['<code><<>></code>', 'safe <code>readline</code> ignoring open flags in arguments'],
+ ['<code>/()/n</code>', 'flag to disable numbered capturing, turning <code>()</code> into <code>(?:)</code>'],
+ ['<code>/\b{}/</code>', 'boundary types: <em>gcb</em> (grapheme cluster), <em>sb</em> (sentence), <em>wb</em> (word)'],
+ ['<code>&.</code>', '<code>& | ^ ~</code> consistently numeric, dotted operators for strings', 'experimental::bitwise'],
+ [q"<code>use re 'strict'</code>", 'apply stricter syntax rules to regular expression patterns', 'experimental::re_strict'],
+ ['<code>0x.beep+0</code>', q"hexadecimal floating point notation with binary power; <code>printf '%a'</code> to display"],
+ ],
+ unicode => '7.0',
+ release => '2015-06-01',
},
}
git.shiar.nl / sheet.git / blobdiff