Html({
title => 'perl version cheat sheet',
- version => '1.3',
+ version => '1.4',
keywords => [qw'
perl version feature features comparison
sheet cheat overview summary
<p>The most significant features introduced for recent versions of the Perl
scripting language.
<:
-my $info = do 'perl.inc.pl' or die $@ // $!;
+my $info = Data('perl');
-say "Depending on desired compatibility you'll want to support a minimum of";
-say join(' or ', map {
- sprintf '<span title="on %s">v%vd</span>', $info->{$_}->{distrosum}, $_
-} v5.8, v5.20), '.';
+eval {
+ use List::Util 'first';
+ use Time::Piece;
+ use Time::Seconds;
+ use feature 'signatures';
+ sub linkversion ($v) {
+ return sprintf('%vd', $v);
+ }
+
+ my $now = Time::Piece->new;
+ my $coreeol = ($now - ONE_YEAR * 3)->strftime('%F');
+ my $vcore = first { $info->{$_}{release} ge $coreeol } sort keys %{$info};
+ say "<p>Core security support is provided for 3 years",
+ ", so typical users should run at least $_."
+ for linkversion($vcore);
+
+ my $vendoreol = ($now - ONE_YEAR * 5)->strftime('%F');
+ my $vdebian = first {
+ $info->{$_}{release} ge $vendoreol && $info->{$_}{distro}{debian}
+ } sort keys %{$info};
+ say sprintf "Stable distributions such as Debian %s maintain %s+.",
+ $info->{$_}{distro}{debian}, linkversion($_) for $vdebian;
+
+ my $nowcmp = $now->strftime('%F');
+ my $vdino = first { $info->{$_}{support} ge $nowcmp } sort keys %{$info};
+ say "Enterprise platforms retain versions up to $_."
+ for linkversion($vdino);
+ return 1;
+} or Alert('Missing version recommendations', $@);
say '</p>';
for my $vernum (reverse sort keys %{$info}) {
if ($attr->{feature}) {
my $prefix = sprintf '<span title="%s">feature</span>',
$attr->{feature};
- my $title = join ', ', $prefix, $title // ();
+ $title = join ', ', $prefix, $title // ();
}
$desc .= sprintf ' <em class="ex">(%s)</em>', $title;
}