perl: minor updates in feature list
[sheet.git] / perl.inc.pl
index 30fe00c4e6432f532512e8c9e875426a4eec64a6..23ca6cf5a1f09f30b06137b845049f207e4e8c79 100644 (file)
 use utf8;
 
 +{
-       v5.6 => [
-               ['use utf8'],
-               ['\N{named character}'],
-               ['our'],
-               ['v1.2.3'],
-               ['sub :locked :method'],
-               ['open $fh, $mode, $expr'],
-       ],
-       v5.8 => [
-               ['unicode overhaul'],
-               ['PerlIO'],
-       ],
-       v5.10 => [
-               ['//', 'defined-or operator'],
-               ['~~', 'smart-match operator to compare different data types'],
-               ['given', 'switch statement to smart-match with when/default'],
-               ['/(?<name>)/ and $+{name}', 'named caputer buffers'],
-               ['s/keep\K//', 'floating positive lookbehind, efficient alternative for s/(keep)/$1/'],
-               ['/\v/, /\h/', 'vertical and horizontal whitespace escapes'],
-               ['my $_', 'lexically scoped version of the default variable'],
-       ],
-       v5.12 => [
-               ['package version', 'package NAME VERSION shorthand for our $VERSION"'],
-               ['...', 'yada-yada operator: code placeholder'],
-               ['use strict', 'Implicit strictures if use VERSION >= 5.12'],
-               ['... when', '"when" is now allowed to be used as a statement modifier'],
-       ],
-       v5.14 => [
-               ['s///r', 'non-destructive substitution'],
-               ['/(?^)/', 'construct to reset to default modifiers'],
-               ['/(?{ m// })/', 'regular expressions can be nested in /(?{})/ and /(??{})/'],
-               ["use re '/flags'", 'customize default modifiers'],
-               ['each $ref e.a.', 'array and hash container functions accept references'],
-       ],
+       v5.6 => {
+               new => [
+                       ['<code>use warnings</code>'],
+                       ['<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>'],
+               ],
+               release => '2000-03-23',
+               distro => {
+                       debian => 'woody',
+                       redhat => '2.1',
+               },
+               unicode => '3.0.1',
+       },
+
+       v5.8 => {
+               new => [
+                       [q`<code>no utf8; $unicode</code>`, 'unicode overhaul: additional /\p{}/ properties'],
+                       [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',
+               },
+               unicode => '3.2.0',
+       },
+
+       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>'],
+                       ['<code>given</code>', 'switch statement to smart-match with <code>when</code>/<code>default</code>'],
+                       ['<code>/(?&lt;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'],
+               ],
+               release => '2007-12-18',
+               distro => {
+                       debian => 'lenny',
+                       redhat => '6.5',
+               },
+               unicode => '5.0.0',
+       },
+
+       v5.12 => {
+               new => [
+                       ['<code>package version</code>', '<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>'],
+               ],
+               release => '2010-04-12',
+               unicode => '5.2',
+       },
+
+       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 $ref</code> e.a.', 'array and hash container functions accept references'],
+                       ['<code>FH->method</code>', 'filehandle method calls load IO::File on demand (eg. <code>STDOUT->flush</code>)'],
+               ],
+               release => '2011-05-14',
+               distro => {
+                       debian => 'wheezy',
+               },
+               unicode => '6.0+#8',
+       },
+
+       v5.16 => {
+               new => [
+                       ['<code>__SUB__</code>', 'current subroutine reference'],
+                       ['<code>fc, "\F"</code>', 'unicode foldcase to compare case-insensitively'],
+                       ['<code>"\N{}"</code>', 'automatic <code>use charnames qw( :full :short )</code>'],
+               ],
+               release => '2012-05-20',
+               distro => {
+                       redhat => '7.0',
+               },
+               unicode => '6.1',
+       },
+
+       v5.18 => {
+               new => [
+                       ['<code>${^LAST_FH}</code>', 'last read filehandle (used by <code>$.</code>)'],
+                       ['<code>/(?[ a + b ])/</code>', 'regex set operations (character substraction <code>-</code>, unions <code>&amp;</code>)'],
+                       ['<code>my sub foo</code>', 'lexical subroutines (also state, our)'],
+                       ['<code>next $expression</code>', 'loop controls allow runtime expressions'],
+                       [q(<code>no warnings 'experimental::…'</code>), 'mechanism for experimental features, as of now required for smartmatch'],
+               ],
+               release => '2013-05-18',
+               unicode => '6.2',
+       },
+
+       v5.20 => {
+               new => [
+                       ['<code>sub ($var)</code>', 'subroutine 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'],
+               ],
+               unicode => '6.3',
+               release => '2014-05-27',
+               distro => {
+                       debian => 'jessie',
+               },
+       },
 }