4 title => 'perl version cheat sheet',
7 perl version feature features comparison
8 sheet cheat overview summary
10 stylesheet => [qw'light dark red'],
11 data => ['perl.inc.pl'],
15 <h1>Perl release summary</h1>
17 <p>The most significant features introduced for recent versions of the Perl scripting language.
18 Depending on desired compatibility you'll want to support a minimum of
19 <span title="on dinosaur platforms such as Solaris 10, AIX 5.2, RHEL 3, SLES 8">v5.8</span> or
20 <span title="on stable servers such as Debian wheezy, Ubuntu 12.04, CentOS 7">v5.14</span>.
24 my $info = do 'perl.inc.pl' or die $@ // $!;
25 for my $vernum (reverse sort keys %{$info}) {
26 my $verrow = $info->{$vernum};
27 $verrow->{unstable} and next unless exists $get{v};
29 print '<div class="section">'."\n";
30 printf '<h2>%vd <small>%s</small></h2><dl>'."\n", $vernum, $verrow->{release};
31 for (@{ $verrow->{new} }) {
32 my ($topic, $desc, $attr) = @{$_};
35 if (defined $attr->{experimental}) {
36 $title = 'experimental';
38 if ($attr->{dropped}) {
39 next unless exists $get{v};
40 $title = sprintf 'removed in %vd', $attr->{dropped};
42 elsif ($attr->{stable}) {
43 $title .= sprintf ' until %vd', $attr->{stable};
45 if ($attr->{experimental}) {
46 $title = sprintf '<span title="experimental::%s">%s</span>',
47 $attr->{experimental}, $title;
49 if ($attr->{feature}) {
50 $title = sprintf('<span title="%s">feature</span>', $attr->{feature})
51 . (defined $title && ", $title");
53 $desc .= sprintf ' <em class="ex">(%s)</em>', $title;
55 printf '<dt>%s<dd>%s'."\n", $topic, $desc || '<br/>';
57 printf '<dt>Unicode</dt><dd>v%s'."\n", $_ for $verrow->{unicode} || ();