FM / 5.34.0

/usr/share/perl/5.34.0/

/usr/share/perl/5.34.0

Name	Size	Mode	Actions
App/	-	0755	rm
Archive/	-	0755	rm
Attribute/	-	0755	rm
autodie/	-	0755	rm
B/	-	0755	rm
Carp/	-	0755	rm
Class/	-	0755	rm
Compress/	-	0755	rm
Config/	-	0755	rm
CPAN/	-	0755	rm
DBM_Filter/	-	0755	rm
Devel/	-	0755	rm
Digest/	-	0755	rm
Encode/	-	0755	rm
encoding/	-	0755	rm
Exporter/	-	0755	rm
ExtUtils/	-	0755	rm
File/	-	0755	rm
Filter/	-	0755	rm
Getopt/	-	0755	rm
HTTP/	-	0755	rm
I18N/	-	0755	rm
IO/	-	0755	rm
IPC/	-	0755	rm
JSON/	-	0755	rm
Locale/	-	0755	rm
Math/	-	0755	rm
Memoize/	-	0755	rm
Module/	-	0755	rm
Net/	-	0755	rm
overload/	-	0755	rm
Params/	-	0755	rm
Parse/	-	0755	rm
Perl/	-	0755	rm
PerlIO/	-	0755	rm
Pod/	-	0755	rm
pod/	-	0755	rm
Search/	-	0755	rm
TAP/	-	0755	rm
Term/	-	0755	rm
Test/	-	0755	rm
Test2/	-	0755	rm
Text/	-	0755	rm
Thread/	-	0755	rm
Tie/	-	0755	rm
Time/	-	0755	rm
Unicode/	-	0755	rm
unicore/	-	0755	rm
User/	-	0755	rm
version/	-	0755	rm
warnings/	-	0755	rm
AnyDBM_File.pm	2618	0644	edit dl rm
autodie.pm	12436	0644	edit dl rm
AutoLoader.pm	15797	0644	edit dl rm
AutoSplit.pm	19637	0644	edit dl rm
autouse.pm	4238	0644	edit dl rm
base.pm	10961	0644	edit dl rm
Benchmark.pm	31026	0644	edit dl rm
bigint.pm	23398	0644	edit dl rm
bignum.pm	21137	0644	edit dl rm
bigrat.pm	16154	0644	edit dl rm
blib.pm	2062	0644	edit dl rm
bytes.pm	3782	0644	edit dl rm
bytes_heavy.pl	758	0644	edit dl rm
Carp.pm	35985	0644	edit dl rm
charnames.pm	20931	0644	edit dl rm
constant.pm	14724	0644	edit dl rm
CORE.pod	3188	0644	edit dl rm
CPAN.pm	146520	0644	edit dl rm
DB.pm	18922	0644	edit dl rm
DBM_Filter.pm	14385	0644	edit dl rm
deprecate.pm	5036	0644	edit dl rm
diagnostics.pm	19299	0644	edit dl rm
Digest.pm	11225	0644	edit dl rm
DirHandle.pm	2085	0644	edit dl rm
Dumpvalue.pm	17668	0644	edit dl rm
dumpvar.pl	15555	0644	edit dl rm
English.pm	4761	0644	edit dl rm
Env.pm	5571	0644	edit dl rm
experimental.pm	7600	0644	edit dl rm
Exporter.pm	18774	0644	edit dl rm
Fatal.pm	59085	0644	edit dl rm
feature.pm	22644	0644	edit dl rm
fields.pm	9475	0644	edit dl rm
FileCache.pm	5549	0644	edit dl rm
FileHandle.pm	6784	0644	edit dl rm
filetest.pm	4003	0644	edit dl rm
FindBin.pm	4648	0644	edit dl rm
if.pm	3626	0644	edit dl rm
integer.pm	3254	0644	edit dl rm
Internals.pod	2575	0644	edit dl rm
less.pm	3204	0644	edit dl rm
locale.pm	4885	0644	edit dl rm
Memoize.pm	36192	0644	edit dl rm
meta_notation.pm	2117	0644	edit dl rm
NEXT.pm	18982	0644	edit dl rm
ok.pm	967	0644	edit dl rm
open.pm	8512	0644	edit dl rm
overload.pm	53349	0644	edit dl rm
overloading.pm	1808	0644	edit dl rm
parent.pm	2702	0644	edit dl rm
perl5db.pl	317295	0644	edit dl rm
perlfaq.pm	77	0644	edit dl rm
PerlIO.pm	14441	0644	edit dl rm
Safe.pm	25352	0644	edit dl rm
SelectSaver.pm	1076	0644	edit dl rm
SelfLoader.pm	17686	0644	edit dl rm
sigtrap.pm	8736	0644	edit dl rm
sort.pm	3911	0644	edit dl rm
strict.pm	4783	0644	edit dl rm
subs.pm	945	0644	edit dl rm
Symbol.pm	4905	0644	edit dl rm
Test.pm	30042	0644	edit dl rm
Test2.pm	6393	0644	edit dl rm
Thread.pm	8289	0644	edit dl rm
UNIVERSAL.pm	6594	0644	edit dl rm
utf8.pm	10756	0644	edit dl rm
vars.pm	2458	0644	edit dl rm
version.pm	1976	0644	edit dl rm
version.pod	9832	0644	edit dl rm
vmsish.pm	4313	0644	edit dl rm
warnings.pm	53221	0644	edit dl rm
XSLoader.pm	11252	0644	edit dl rm
_charnames.pm	34151	0644	edit dl rm

Edit: /usr/share/perl/5.34.0/sort.pm (3911B)

package sort;

our $VERSION = '2.04';

# The hints for pp_sort are now stored in $^H{sort}; older versions
# of perl used the global variable $sort::hints. -- rjh 2005-12-19

$sort::stable_bit      = 0x00000100;
$sort::unstable_bit    = 0x00000200;

use strict;

sub import {
    shift;
    if (@_ == 0) {
	require Carp;
	Carp::croak("sort pragma requires arguments");
    }
    local $_;
    $^H{sort} //= 0;
    while ($_ = shift(@_)) {
	if ($_ eq 'stable') {
	    $^H{sort} |=  $sort::stable_bit;
	    $^H{sort} &= ~$sort::unstable_bit;
	} elsif ($_ eq 'defaults') {
	    $^H{sort} =   0;
	} else {
	    require Carp;
	    Carp::croak("sort: unknown subpragma '$_'");
	}
    }
}

sub unimport {
    shift;
    if (@_ == 0) {
	require Carp;
	Carp::croak("sort pragma requires arguments");
    }
    local $_;
    no warnings 'uninitialized';	# bitops would warn
    while ($_ = shift(@_)) {
	if ($_ eq 'stable') {
	    $^H{sort} &= ~$sort::stable_bit;
	    $^H{sort} |=  $sort::unstable_bit;
	} else {
	    require Carp;
	    Carp::croak("sort: unknown subpragma '$_'");
	}
    }
}

sub current {
    my @sort;
    if ($^H{sort}) {
	push @sort, 'stable'    if $^H{sort} & $sort::stable_bit;
    }
    join(' ', @sort);
}

1;
__END__

=head1 NAME

sort - perl pragma to control sort() behaviour

=head1 SYNOPSIS

use sort 'stable';		# guarantee stability
    use sort 'defaults';	# revert to default behavior
    no  sort 'stable';		# stability not important

my $current;
    BEGIN {
	$current = sort::current();	# identify prevailing pragmata
    }

=head1 DESCRIPTION

With the C<sort> pragma you can control the behaviour of the builtin
C<sort()> function.

A stable sort means that for records that compare equal, the original
input ordering is preserved.
Stability will matter only if elements that compare equal can be
distinguished in some other way.  That means that simple numerical
and lexical sorts do not profit from stability, since equal elements
are indistinguishable.  However, with a comparison such as

{ substr($a, 0, 3) cmp substr($b, 0, 3) }

stability might matter because elements that compare equal on the
first 3 characters may be distinguished based on subsequent characters.

Whether sorting is stable by default is an accident of implementation
that can change (and has changed) between Perl versions.
If stability is important, be sure to
say so with a

use sort 'stable';

The C<no sort> pragma doesn't
I<forbid> what follows, it just leaves the choice open.  Thus, after

no sort 'stable';

sorting may happen to be stable anyway.

=head1 CAVEATS

As of Perl 5.10, this pragma is lexically scoped and takes effect
at compile time. In earlier versions its effect was global and took
effect at run-time; the documentation suggested using C<eval()> to
change the behaviour:

{ eval 'no sort "stable"';      # stability not wanted
    print sort::current . "\n";
    @a = sort @b;
    eval 'use sort "defaults"';   # clean up, for others
  }
  { eval 'use sort qw(defaults stable)';     # force stability
    print sort::current . "\n";
    @c = sort @d;
    eval 'use sort "defaults"';   # clean up, for others
  }

Such code no longer has the desired effect, for two reasons.
Firstly, the use of C<eval()> means that the sorting algorithm
is not changed until runtime, by which time it's too late to
have any effect. Secondly, C<sort::current> is also called at
run-time, when in fact the compile-time value of C<sort::current>
is the one that matters.

So now this code would be written:

{ no sort "stable";      # stability not wanted
    my $current;
    BEGIN { $current = sort::current; }
    print "$current\n";
    @a = sort @b;
    # Pragmas go out of scope at the end of the block
  }
  { use sort qw(defaults stable);     # force stability
    my $current;
    BEGIN { $current = sort::current; }
    print "$current\n";
    @c = sort @d;
  }

=cut

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