golden hour

/usr/share/perl/5.30.0

File/Folder	Size	Actions
AnyDBM_File.pm	2.56 KB
App	-
Archive	-
Attribute	-
AutoLoader.pm	15.43 KB
AutoSplit.pm	19.18 KB
B	-
Benchmark.pm	30.3 KB
CORE.pod	3.11 KB
CPAN	-
CPAN.pm	138.75 KB
Carp	-
Carp.pm	35.12 KB
Class	-
Compress	-
Config	-
DB.pm	18.48 KB
DBM_Filter	-
DBM_Filter.pm	14.05 KB
Devel	-
Digest	-
Digest.pm	10.45 KB
DirHandle.pm	2.04 KB
Dumpvalue.pm	17.14 KB
Encode	-
English.pm	4.65 KB
Env.pm	5.39 KB
Exporter	-
Exporter.pm	18.36 KB
ExtUtils	-
Fatal.pm	56.91 KB
File	-
FileCache.pm	5.42 KB
FileHandle.pm	6.63 KB
Filter	-
FindBin.pm	4.45 KB
Getopt	-
HTTP	-
I18N	-
IO	-
IPC	-
Internals.pod	2.51 KB
JSON	-
Locale	-
Math	-
Memoize	-
Memoize.pm	35.34 KB
Module	-
NEXT.pm	18.54 KB
Net	-
Params	-
Parse	-
Perl	-
PerlIO	-
PerlIO.pm	10.21 KB
Pod	-
Safe.pm	24.49 KB
Search	-
SelectSaver.pm	1.05 KB
SelfLoader.pm	17.27 KB
Symbol.pm	4.69 KB
TAP	-
Term	-
Test	-
Test.pm	29.34 KB
Test2	-
Test2.pm	6.24 KB
Text	-
Thread	-
Thread.pm	8.09 KB
Tie	-
Time	-
UNIVERSAL.pm	6.44 KB
Unicode	-
User	-
XSLoader.pm	10.99 KB
_charnames.pm	32.39 KB
autodie	-
autodie.pm	12.58 KB
autouse.pm	4.14 KB
base.pm	10.7 KB
bigint.pm	22.85 KB
bignum.pm	20.64 KB
bigrat.pm	15.78 KB
blib.pm	2.01 KB
bytes.pm	3.65 KB
bytes_heavy.pl	758 B
charnames.pm	20.38 KB
constant.pm	14.38 KB
deprecate.pm	5.07 KB
diagnostics.pm	18.59 KB
dumpvar.pl	15.19 KB
encoding	-
experimental.pm	6.9 KB
feature.pm	17.28 KB
fields.pm	9.25 KB
filetest.pm	3.91 KB
if.pm	3.53 KB
integer.pm	3.18 KB
less.pm	3.13 KB
locale.pm	4.74 KB
meta_notation.pm	2.07 KB
ok.pm	967 B
open.pm	7.83 KB
overload	-
overload.pm	52.04 KB
overloading.pm	1.77 KB
parent.pm	2.51 KB
perl5db.pl	309.69 KB
perlfaq.pm	77 B
pod	-
sigtrap.pm	8.53 KB
sort.pm	3.82 KB
strict.pm	4.63 KB
subs.pm	901 B
unicore	-
utf8.pm	10.18 KB
utf8_heavy.pl	26.66 KB
vars.pm	2.4 KB
version	-
version.pm	1.93 KB
version.pod	9.6 KB
vmsish.pm	4.21 KB
warnings	-
warnings.pm	48.82 KB

Edit: AnyDBM_File.pm

package AnyDBM_File;
use warnings;
use strict;

use 5.006_001;
our $VERSION = '1.01';
our @ISA = qw(NDBM_File DB_File GDBM_File SDBM_File ODBM_File) unless @ISA;

my $mod;
for $mod (@ISA) {
    if (eval "require $mod") {
	@ISA = ($mod);	# if we leave @ISA alone, warnings abound
	return 1;
    }
}

die "No DBM package was successfully found or installed";

__END__

=head1 NAME

AnyDBM_File - provide framework for multiple DBMs

NDBM_File, DB_File, GDBM_File, SDBM_File, ODBM_File - various DBM implementations

=head1 SYNOPSIS

use AnyDBM_File;

=head1 DESCRIPTION

This module is a "pure virtual base class"--it has nothing of its own.
It's just there to inherit from one of the various DBM packages.  It
prefers ndbm for compatibility reasons with Perl 4, then Berkeley DB (See
L<DB_File>), GDBM, SDBM (which is always there--it comes with Perl), and
finally ODBM.   This way old programs that used to use NDBM via dbmopen()
can still do so, but new ones can reorder @ISA:

BEGIN { @AnyDBM_File::ISA = qw(DB_File GDBM_File NDBM_File) }
    use AnyDBM_File;

Having multiple DBM implementations makes it trivial to copy database formats:

use Fcntl; use NDBM_File; use DB_File;
    tie %newhash,  'DB_File', $new_filename, O_CREAT|O_RDWR;
    tie %oldhash,  'NDBM_File', $old_filename, 1, 0;
    %newhash = %oldhash;

=head2 DBM Comparisons

Here's a partial table of features the different packages offer:

odbm    ndbm    sdbm    gdbm    bsd-db
			 ----	 ----    ----    ----    ------
 Linkage comes w/ perl   yes     yes     yes     yes     yes
 Src comes w/ perl       no      no      yes     no      no
 Comes w/ many unix os   yes     yes[0]  no      no      no
 Builds ok on !unix      ?       ?       yes     yes     ?
 Code Size               ?       ?       small   big     big
 Database Size           ?       ?       small   big?    ok[1]
 Speed                   ?       ?       slow    ok      fast
 FTPable                 no      no      yes     yes     yes
 Easy to build          N/A     N/A      yes     yes     ok[2]
 Size limits             1k      4k      1k[3]   none    none
 Byte-order independent  no      no      no      no      yes
 Licensing restrictions  ?       ?       no      yes     no

=over 4

=item [0]

on mixed universe machines, may be in the bsd compat library,
which is often shunned.

=item [1]

Can be trimmed if you compile for one access method.

=item [2]

See L<DB_File>. 
Requires symbolic links.

=item [3]

By default, but can be redefined.

=back

=head1 SEE ALSO

dbm(3), ndbm(3), DB_File(3), L<perldbmfilter>

=cut