WebPerl uses the power of WebAssembly and Emscripten to let you run Perl in the browser!

WebPerl does not translate your Perl code to JavaScript, instead, it is a port of the perl binary to WebAssembly, so that you have the full power of Perl at your disposal!

<script src="webperl.js"></script>
<script type="text/perl">

print "Hello, Perl World!\n";  # goes to JavaScript console by default

js('document')->getElementById('my_button')
    ->addEventListener('click', sub {
        js('window')->alert("You clicked the button!");
    } );
</script>

Module::Starter - a simple starter kit for any module

#SYNOPSIS

use Inline::Perl5;
use DBI:from<Perl5>;

my $dbh = DBI.connect('dbi:Pg:database=test');
my $products = $dbh.selectall_arrayref(
    'select * from products', {Slice => {}}
);

#DESCRIPTION

Module for executing Perl 5 code and accessing Perl 5 modules from Perl 6.

Supports Perl 5 modules including XS modules. Allows passing integers, strings, arrays, hashes, code references, file handles and objects between Perl 5 and Perl 6. Also supports calling methods on Perl 5 objects from Perl 6 and calling methods on Perl 6 objects from Perl 5 and subclass Perl 5 classes in Perl 6.

The perl package now uses a versioned path for compiled modules. This means that modules built for a non-matching perl version will not be loaded any more and must be rebuilt.

A pacman hook warns about affected modules during the upgrade by showing output like this:

WARNING: '/usr/lib/perl5/vendor_perl' contains data from at least 143 packages which will NOT be used by the installed perl interpreter.

-> Run the following command to get a list of affected packages: pacman -Qqo '/usr/lib/perl5/vendor_perl'

You must rebuild all affected packages against the new perl package before you can use them again. The change also affects modules installed directly via CPAN. Rebuilding will also be necessary again with future major perl updates like 5.28 and 5.30.

Please note that rebuilding was already required for major updates prior to this change, however now perl will no longer try to load the modules and then fail in strange ways.

If the build system of some software does not detect the change automatically, you can use perl -V:vendorarch in your PKGBUILD to query perl for the correct path. There is also sitearch for software that is not packaged with pacman.

MySQLTuner is a script written in Perl that allows you to review a MySQL installation quickly and make adjustments to increase performance and stability. The current configuration variables and status data is retrieved and presented in a brief format along with some basic performance suggestions.

MySQLTuner supports in this last version ~250 indicators for MySQL/MariaDB/Percona Server.

MySQLTuner is maintained and indicator collect is increasing week after week supporting a lot of configurtion sush as:

Unless you are a MySQL performance tuning expert, it can be enormously challenging and somewhat overwhelming to locate and eliminate MySQL bottlenecks. While many DBAs focus on improving the performance of the queries themselves, this post will focus on the highest-impact non-query items: MySQL Server Performance and OS Performance for MySQL.

3.1.2. Complete Expression for Deliverable Email Address

The following regular expression is a deliverable email address:

; Mailbox from RFC 5321, as amended

P E J DEA     = ([A-Za-z0-9!#-'*+\-/=?^_`{-~\xA0-\x{10FFFF}]+
(?:\.[A-Za-z0-9!#-'*+\-/=?^_`{-~\xA0-\x{10FFFF}])|
"(?:[ !#-\[\]-~\xA0-\x{10FFFF}]|\\[ -~])*")@
((?:[A-Za-z0-9](https:///?:[A-Za-z0-9\-]*[A-Za-z0-9])?|
[\x00-\x{10FFFF}]*[\x80-\x{10FFFF}]+[\x00-\x{10FFFF}]*)
(?:\.(?:[A-Za-z0-9](https:///?:[A-Za-z0-9\-]*
[A-Za-z0-9])?|[\x00-\x{10FFFF}]*
[\x80-\x{10FFFF}]+[\x00-\x{10FFFF}]*))*)

In the regular expression DEA, capturing group 1 is the local-part
production, and capturing group 2 is the domain production.

#Uploading Your First Module to CPAN brian d foy The Perl Review YAPC::EU 2011

• You upload through PAUSE, The Perl Authors Upload Server. This is a stepping stone to CPAN.
• Indexing.
  -- PAUSE indexes and creates data files for the CPAN clients
  -- Only the latest distributions get into it.
  -- People have permissions for namespaces
• Get a PAUSE Account
• Choose a [module name](https://pause.perl.org/pause/query? ACTION=pause_namingmodules)
• Permissions.
  -- You can upload a namespace someone else already uses.
  -- But PAUSE will ignore it.
  -- A good name goes a long way.
• Create the distro
  -- There are modules that can help you
  --- Module::Starter
  --- Distribution::Cooker
  --- h2xs (comes with Perl)
  --- many others
• 25,000 Examples
  -- Look at other distributions to get examples
  -- See how other people do it
  -- Ask them questions
• Github
• Upload
• Upload early & often
  -- You don’t have to be perfect, or even good
  -- Other people can help as soon as possible
  -- CPAN Testers can send you feedback
• CPAN Search
• Lots more
  -- PAUSE lets you add co-maintainers
  -- You can take over existing modules
  -- You can help with other people’s modules
• Publicize your module
  -- Don’t be shy
  -- Write something on blogs.perl.org
  -- Tweet it, plus it, facebook it
  -- Give a lightning talk
• Getting help
  -- For help with PAUSE issues, write to modules@perl.org
  -- One of the PAUSE volunteer admins can help you
  -- For general module questions, you might try module-authors@perl.org
  -- For CPAN Search issues, try cpansearch@perl.org

How to upgrade your Gravatar picture on MetaCPAN

Percona XtraBackup is the world’s only open-source, free MySQL hot backup software that performs non-blocking backups for InnoDB and XtraDB databases. With Percona XtraBackup, you can achieve the following benefits:

Backups that complete quickly and reliably
Uninterrupted transaction processing during backups
Savings on disk space and network bandwidth
Automatic backup verification
Higher uptime due to faster restore time

Percona XtraBackup makes MySQL hot backups for all versions of Percona Server, MySQL, and MariaDB. It performs streaming, compressed, and incremental MySQL backups.

Percona XtraBackup works with MySQL, MariaDB, and Percona Server. It supports completely non-blocking backups of InnoDB, XtraDB, and HailDB storage engines. In addition, it can back up the following storage engines by briefly pausing writes at the end of the backup: MyISAM, Merge, and Archive, including partitioned tables, triggers, and database options.

Percona’s enterprise-grade commercial MySQL Support contracts include support for Percona XtraBackup. We recommend support for critical production deployments.

Percona XtraBackup is an high performance, low-profile and non-blocking open-source backup utility for InnoDB and XtraDB databases.

Currently is the only open-source tool that performs backups on 'MySQL-based' servers (MySQL, MariaDB, Percona Server) that doesn't lock your database during it. Backups are online, and queries and transactions continue to run without interruption ('hot backups').

It can back up data from InnoDB, XtraDB, and MyISAM tables on MySQL 5.0 and 5.1 servers, and it has many advanced features like partial, remote, compressed and incremental backups, multi-threaded file copying for performance and Point-in-time recovery.

RapidApp talk and live demo presented at YAPC::NA 2015 in Salt Lake City on June 9th.

RapidApp is a PSGI-compatable, open-source web toolkit and framework based on Catalyst, ExtJS, Template::Toolkit and DBIx::Class for quickly creating interactive, data-rich webapps and components.

Pflogsumm is a log analyzer for Postfix. It can mail out a summery on a daily, weekly or monthly basis and is fully configurable. The generated report can show you patterns in email traffic so you can better determine bandwidth limitations, mail server abusers or if your mail server needs to be upgraded. Statistics can be very helpful in showing, for example, when most of your mail is sent or received or if that one mail user is sending out more than their fair share of mail. Pflogsumm will give you the ability to quickly determine what machines on your network are the top (ab)users and the proof to follow up company policies with numbers.

Pflogsumm is a single perl file and its only dependancies are perl, the perl module Date::Calc (which is probably already installed on your system) and the proper location of a Postfix log file.

A Perl REPL !

pflogsumm.pl is designed to provide an over-view of postfix activity, with just enough detail to give the administrator a "heads up" for potential trouble spots. The following is an over-view of the reports produced.

Use split with a regex that matches anything.

my @arr = split //, "abcd";

Want to see what's inside a variable in a complete, colored and human-friendly way?

use Data::Printer; # or just "use DDP" for short

p @array; # no need to pass references

Code above might output something like this (with colors!):

[
[0] "a",
[1] "b",
[2] undef,
[3] "c",
]

You can also inspect objects:

my $obj = SomeClass->new;

p($obj);

Which might give you something like:

\ SomeClass {
Parents Moose::Object
Linear @ISA SomeClass, Moose::Object
public methods (3) : bar, foo, meta
private methods (0)
internals: {
_something => 42,
}
}