use utf8;
+{
+ v5.005 => {
+ new => [
+ ['threads' => '', {experimental => 0, stable => 0}],
+ ['<code>B::…</code>', 'backend hooks'],
+ ['<code>qr//</code>' => 'overhauled regular expression engine: precompile operator, lookahead/behind, code, conditions, localised flags'],
+ ['<code>… foreach</code>' => '<code>for(each)</code> as statement modifier, with large ranges optimised as counting loops'],
+ ['<code>…::</code>' => 'implicitly quoted package name'],
+ ['<code>ref $@</code>' => '<code>die</code> passes reference values to exception handlers'],
+ ['<code>INIT {}</code>', 'subs run just before the perl runtime begins execution'],
+ ['<code>tie @…</code>' => 'base class for <code>TIEARRAY</code> implementations, and generally improved supported of tied handlers'],
+ ['<code>substr …,…,…,$replace</code>', 'replacement string in 4th argument'],
+ ['<code>splice …,…,-$length</code>', 'negative length indicates elements to keep at the end of an array'],
+ ['<code>$/</code>', 'integer or scalar separator makes <code><></code> read records instead of lines'],
+ ],
+ release => '1998-07-22',
+ unstable => 0,
+ },
+
v5.6 => {
new => [
['<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 utf8</code>', 'experimental unicode semantics <small>(completed in v5.8)</small>', {experimental => 0, stable => 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 :lvalue</code>', 'subroutine attribute to return a modifiable value', {experimental => 0, stable => 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],
+ [q"<code>pack 'q'</code>", '64-bit integer support (also large files >2GiB)', {experimental => 0, stable => 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>'],
v5.10 => {
new => [
['<code>//</code>', 'defined-or operator'],
- ['<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>~~</code>', 'smart-match operator to compare different data types <small>(updated in v5.10.1)</small>', {experimental => 'smartmatch'}],
+ ['<code>say</code>', 'print with newline, equivalent to <code>print @_, "\n"</code>', {feature => 'say'}],
+ ['<code>given</code>', 'switch statement to smart-match with <code>when</code>/<code>default</code>', {feature => 'switch', experimental => 'smartmatch'}],
['<code>/(?<name>)/</code>', 'named capture buffers into <code>%+</code>'],
+ ['<code>/(?1)/</code>', 'recursive regular expression patterns'],
+ ['<code>/.++/</code>', 'possessive quantifiers <code>?+</code>, <code>*+</code>, <code>++</code> to match greedily'],
['<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', v0.5.23.4, 'experimental::lexical_topic'],
+ ['<code>my $_</code>', 'lexically scoped version of the default variable', {experimental => 'lexical_topic', dropped => v5.23.4}],
+ ['<code>state</code>', 'persistent <code>my</code> variables', {feature => 'state'}],
],
release => '2007-12-18',
distro => {
v5.12 => {
new => [
- ['<code>package version</code>', '<code>package</code> NAME VERSION shorthand for <code>our $VERSION</code>'],
+ ['<code>package</code> version', '<code>package</code> NAME VERSION shorthand for <code>our $VERSION</code>'],
['<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],
+ ['<code>/\N/</code>', 'inverse \n to match any character except newline regardless of <code>/s</code>', {experimental => 0, stable => v5.18}],
],
release => '2010-04-12',
unicode => '5.2',
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>', v5.20],
+ ['<code>/(?{ m() })/</code>', 'regular expressions can be nested in <code>/(?{})/</code> and <code>/(??{})/</code>', {experimental => 0, stable => v5.20}],
[q"<code>use re '/flags'</code>", 'customise default modifiers'],
- ['<code>each $ref</code> e.a.', 'array and hash container functions accept references', v0.5.23.1],
+ ['<code>each $ref</code> e.a.', 'array and hash container functions accept references', {experimental => 'postderef', dropped => v5.23.1}],
['<code>FH->method</code>', 'filehandle method calls load IO::File on demand (eg. <code>STDOUT->flush</code>)'],
],
release => '2011-05-14',
v5.16 => {
new => [
- ['<code>__SUB__</code>', 'current subroutine reference'],
- ['<code>fc, "\F"</code>', 'unicode foldcase to compare case-insensitively'],
+ ['<code>__SUB__</code>', 'current subroutine reference', {feature => 'current_sub'}],
+ ['<code>fc, "\F"</code>', 'unicode foldcase to compare case-insensitively', {feature => 'fc'}],
['<code>"\N{}"</code>', 'automatic <code>use charnames qw( :full :short )</code>'],
],
release => '2012-05-20',
v5.18 => {
new => [
['<code>${^LAST_FH}</code>', 'last read filehandle (used by <code>$.</code>)'],
- ['<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>/(?[ 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>); buggy before v5.22', {feature => 'lexical_subs', 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 <em>smartmatch</em>'],
],
release => '2013-05-18',
distro => {
v5.20 => {
new => [
- ['<code>sub ($var)</code>', 'subroutine signatures', 'experimental::signatures'],
+ ['<code>sub ($var)</code>', 'subroutine signatures', {feature => '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>)', v5.23.1, 'experimental::postderef'],
+ ['<code>[]->@*</code>', 'postfix dereferencing (also e.g. <code>$scalar->$*</code> for <code>$$scalar</code>)', {feature => 'postderef, postderef_qq', experimental => 'postderef', stable => v5.23.1}],
[q"<code>use warnings 'once'; $a</code>", 'variables $a and $b are exempt from <em>used once</em> warnings'],
],
unicode => '6.3',
v5.22 => {
new => [
- ['<code>\$alias =</code>', 'aliasing via reference'],
+ ['<code>\$alias =</code>', 'aliasing via reference (scoped as of v5.25.3)', {experimental => 'refaliasing'}],
['<code><<>></code>', 'safe <code>readline</code> ignoring open flags in arguments'],
['<code>/()/n</code>', 'flag to disable numbered capturing, turning <code>()</code> into <code>(?:)</code>'],
['<code>/\b{}/</code>', 'boundary types: <em>gcb</em> (grapheme cluster), <em>sb</em> (sentence), <em>wb</em> (word)'],
- ['<code>&.</code>', '<code>& | ^ ~</code> consistently numeric, dotted operators for strings', 'experimental::bitwise'],
- [q"<code>use re 'strict'</code>", 'apply stricter syntax rules to regular expression patterns', 'experimental::re_strict'],
+ ['<code>&.</code>', '<code>& | ^ ~</code> consistently numeric, dotted operators for strings', {experimental => 'bitwise'}],
+ [q"<code>use re 'strict'</code>", 'apply stricter syntax rules to regular expression patterns', {experimental => 're_strict'}],
['<code>0x.beep+0</code>', q"hexadecimal floating point notation with binary power; <code>printf '%a'</code> to display"],
],
unicode => '7.0',
new => [
[q"<code>printf '%.*2$x'</code>", 'reordered precision arguments'],
['<code>/\b{lb}/</code>', 'line break boundary type (position suitable for hyphenation)'],
- ['<code>/faster/</code>', 'significant speedups matching fixed substrings and <code>/i</code> with caseless languages'],
+ ['<code>/faster/</code>', 'various significant speedups, notably matching fixed substrings, <code>/i</code> on caseless languages, 64-bit arithmetic, scope overhead'],
],
unicode => '8.0',
release => '2016-05-09',
},
+
+ v5.25.10 => {
+ new => [
+ ['<code><<~EOT</code>', 'indented here-docs, strips same whitespace before delimiter in each line'],
+ ['<code>@{^CAPTURE}</code>', q"array of last match's captures, so <code>${^CAPTURE}[0]</code> is <code>$1</code>"],
+ ['<code>//xx</code>', 'extended modifier to also ignore whitespace in bracketed character classes'],
+ ],
+ unicode => '9.0', # also Script_Extensions/scx in "\p{script}"
+ release => '2017-02-20',
+ },
}
git.shiar.nl / sheet.git / blobdiff