Что нового в Perl? 5.10

$state-переменные my $LINES_READ = 0; sub read_line { $LINES_READ++; ... } perlsub$

$state-переменные { my $LINES_READ = 0; sub read_line { $LINES_READ++; ... } } ...$

$state-переменные sub read_line { state $LINES_READ = 0; $LINES_READ++; ... } perlsub$

$Истина и определённость sub record_sale { perlop$

$Истина и определённость sub record_sale { my ($product, $amount) = @_; perlop$

$Истина и определённость sub record_sale { my ($product, $amount) = @_; my $price = $amount ...$

$Истина и определённость sub record_sale { my ($product, $amount) = @_; my $price = $amount || $pr...$

$Истина и определённость sub record_sale { my ($product, $amount) = @_; my $price = deﬁned $amount ...$

$Истина и определённость sub record_sale { my ($product, $amount) = @_; my $price = $amount || $pr...$

$Истина и определённость sub record_sale { my ($product, $amount) = @_; my $price = $amount // $pr...$

$Новый оператор ИЛИ sub record_sale { my ($product, $amount) = @_; $amount //= $product->price; ... } ...$

$Рекурсия! sub fact { my ($x) = @_; # must be +int return $x if $x == 1; return $x * fact($x - 1); }$

$Рекурсия! my $fact = sub { my ($x) = @_; # must be +int return $x if $x == 1; return $x * $fact->($x - 1); };$

$Рекурсия! my $fact; $fact = sub { my ($x) = @_; # must be +int return $x if $x == 1; return $x * $fact->($x - 1)...$

$Рекурсия! use Scalar::Util qw(weaken); my $fact = do { my $f1; my $f2 = $f1 = sub { my ($x) = @_; return $x...$

$Рекурсия! use 5.16.0; # current sub my $fact = sub { my ($x) = @_; # must be +int return $x if $x == 1; return $...$

$autodie use autodie; open my $fh, ‘<‘, $ﬁlename; while (<$fh>) { no autodie; rmdir or warn “couldn’t remove $_: $!”; }...$

$IO::File sub stream_to_fh { my ($self, $fh) = @_; ﬁleno $fh or die “can’t stream to closed fh”; while (my $hunk ...$

$IO::File sub stream_to_fh { my ($self, $fh) = @_; $fh->ﬁleno or die “can’t stream to closed fh”; while (my $hunk...$

$IO::File sub stream_to_fh { ... $fh->print($hunk); ... $fh->close or die “error closing: $!”; } open my $targe...$

$IO::File use IO::File; sub stream_to_fh { ... $fh->print($hunk); ... $fh->close or die “error closing: $!”; } o...$

$IO::File use 5.14.0; sub stream_to_fh { ... $fh->print($hunk); ... $fh->close or die “error closing: $!”; } ope...$

$IO::File use 5.14.0; use autodie; sub stream_to_fh { ... $fh->print($hunk); ... $fh->close or die “error closin...$

$given ($x) { when ($y) { try { ... } catch { warn “error: $_”; return undef; } ...$

$Мой любимый 5.12-изм? if (length $input->{new_email}) { $user->update_email(...); } Use of uninitialized value in len...$

$N{...} use 5.16.0; say "I N{HEAVY_BLACK_HEART} Queensr" . "N{LATIN_SMALL_LETTER_Y_WITH_DIAERESIS}" . "che!"; ...$

$Новые модификаторы my @short_names = map { s/..*//; } @long_names; perlre$

$Новые модификаторы my @short_names = map { s/..*//; $_ } @long_names; perlre$

$Новые модификаторы my @short_names = map { my $x = $_; $x =~ s/..*//; $x } @long_names; ...$

$Новые модификаторы my @short_names = map { s/..*//r } @long_names; perlre$

$qw() for my $show qw(Smallville Lost V) { $tivo->cancel_pass( $show ); } perlop$

$qw() for my $show (qw(Smallville Lost V)) { $tivo->cancel_pass( $show ); } per...$