X-Git-Url: http://git.shiar.net/sheet.git/blobdiff_plain/76d34d4bd4b31ebbe6847e5b31d2d4b699e75e38..133e96335267b12bb7e97d9bbe551a3a043bd32a:/perl.plp diff --git a/perl.plp b/perl.plp index 8735f5f..596e4d8 100644 --- a/perl.plp +++ b/perl.plp @@ -2,7 +2,7 @@ Html({ title => 'perl version cheat sheet', - version => '1.3', + version => '1.6', keywords => [qw' perl version feature features comparison sheet cheat overview summary @@ -11,56 +11,132 @@ Html({ data => ['perl.inc.pl'], }); +use experimental 'signatures'; :>
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 'v%vd', $info->{$_}->{distrosum}, $_ -} v5.8, v5.14), '.'; +use feature 'signatures'; +sub vname ($v) { + return sprintf 'v%d%03d', unpack 'C*', $v; +} +sub linkversion ($v) { + return showlink(sprintf('%vd', $v), '#'.vname($v)); +} + +eval { + use List::Util 'first'; + use Time::Piece; + use Time::Seconds; + + my $now = Time::Piece->new; + if (my $ts = $get{at}) { + $now = $now->strptime($ts, '%Y-%m-%d'); + say "Compatibility details emulated for $ts."; + } + my $ts = $now->strftime('%F'); + my @versions = sort grep { $info->{$_}{release} le $ts } keys %{$info}; + + # perlpolicy: «We "officially" support the two most recent stable release + # series. [...] we will attempt to fix critical issues» + $info->{ $versions[-2] }{versum} //= "active core support"; + $info->{ $versions[-1] }{versum} //= "latest stable release"; + + # perlpolicy: «we will attempt to fix critical issues in the two most + # recent stable 5.x release series» + my $coreeol = ($now - ONE_YEAR * 3)->strftime('%F'); + my $vcore = first { $info->{$_}{release} ge $coreeol } @versions; + print "
Core security support is provided for 3 years"; + print ", so typical users should run at least ", linkversion($_) + for $vcore // (); + say '.'; + $info->{$vcore}{versum} //= "official security patches"; + + # «We encourage vendors to ship the most recent supported release of Perl + # at the time of their code freeze» + # assume debian ships after 1 year, and expires after 5 years LTS + my $vendoreol = ($now - ONE_YEAR * 6)->strftime('%F'); + my $vdebian = first { + $info->{$_}{release} ge $vendoreol && $info->{$_}{distro}{debian} + } @versions; + say sprintf "Stable distributions such as Debian %s maintain %s+.", + $info->{$_}{distro}{debian}, linkversion($_) for $vdebian // (); + $info->{$vdebian}{versum} //= "still maintained by common vendors"; + + # extended support given at random + my $nowcmp = $now->strftime('%F'); + my $vdino = first { $info->{$_}{support} ge $nowcmp } @versions; + say "Enterprise platforms retain versions up to $_." + for map { linkversion($_) } $vdino // (); + return 1; +} or Alert('Missing version recommendations', $@); say '
'; for my $vernum (reverse sort keys %{$info}) { my $verrow = $info->{$vernum}; defined $verrow->{unstable} and next unless exists $get{v}; - say 'use %s
', $ref, $name;
+ say '}g;
+ $pre = " {$pre
}";
+ $title = $pre . $title;
+ }
+ return $title;
+}