In Part 1, I compared Perl’s regexp features with sed and Awk. In this concluding part, I’ll cover examples that make use of Perl’s extensive built-in features and third-party modules.

Perl has a much bigger collection of built-in functions compared to Awk. For command-line usage, I often need tr, join, map and grep. I like that arrays and hashes are distinct in Perl and applying sort on these data types is much simpler compared to Awk.

This problem wants to append columns to rows that have too few, like the b, c and d rows:

a,10,12,13
b,20,22
c,30
d,33

This app…

A shell (like Bash) provides built-in commands and scripting features to easily solve and automate various tasks. External commands like grep, sed, Awk, sort, find, or parallel can be combined to work with each other. Sometimes you can use Perl either as a single replacement or a complement to them for specific use cases.

Perl is the most robust portable option for text processing needs. Perl has a feature rich regular expression engine, built-in functions, an extensive ecosystem, and is quite portable. However, Perl may have slower performance compared to specialized tools and can be more verb…

[This article is part of our Popular articles project to update Perl.com for contemporary practices]

If you’re reading this article, you’re likely looking for a simple way to download and install the Perl programming language. Or you already have Perl installed as part of your operating system, but it’s older than the currently-supported versions (5.32.1 or 5.30.3) and you’d like to use the latest and greatest features. The download options may seem daunting, especially if you’re new to computers or programming. We’ll take things step by step, and soon you’ll be on your way to…

Paul “LeoNerd” Evans is a CPAN author, blogger, and core Perl contributor. He introduced the experimental isa operator in Perl 5.32 and the try/catch syntax in an upcoming version.

Lets see—I’m going to do this in reverse chronological order.

Currently I’m a self-employed contractor, splitting my time between Perl and other computery things, and electronics. Most of the jobs I’ve had before I did that were based on Perl, with the minor exception of a little Internet startup company called &ldqu…

Before I became a computer programmer, I tried my hand at being a human programmer, in the form of a wordsmith, as I called myself then. I had various jobs as a writer, editor, translator and journalist, but I met with little success, for two main reasons. In those days you needed a publisher to find your work interesting enough to publish before anyone could read it, and that was a pretty high bar. And in the second place, it was difficult to get the humans to react to the content I wrote (I’m still exercised that the movie reviewer would get more letters to the editor than I did after…

For a week we lost control of the Perl.com domain. Now that the incident has died down, we can explain some of what happened and how we handled it. This incident only affected the domain ownership of Perl.com and there was no other compromise of community resources. This website was still there, but DNS was handing out different IP numbers.

First, this wasn’t an issue of not renewing the domain. That would have been a better situation for us because there’s a grace period.

Second, to be very clear, I’m just an editor for the website that uses the Perl.com domain. This means that I’m…

Regarding his Raku CI bot grant, Patrick Böker writes:

In September I:

• got the OBS interfacing component working, and
• got the GitHub interfacing component working.

I hoped to manage to put a working system together this weekend. (Currently only integrating GitHub and OBS, so no separate Website and no interactive features yet.) That didn't quite work out, but there is not much missing. So I'm hopeful to do so in the coming days.

Jonathan completed the work on his grant. The changes were merged into Raku and will be productive in the next Raku release. We thank the sponsors for supporting this grant, Jonathan for his work; and also the other volunteers who helped with various tasks so this big change could be merged.

During September, I completed the remaining hours on my current grant. The key aim of the grant - to bring my work on a new generalized dispatch mechanism to the point where it could be merged and delivered to Raku users - has been achieved, the merge taki…

``` Approximately 40 tickets were reviewed, and 7 patches were applied

[Hours] [Activity] 7.45 #18606 produce another case where the implementation fails, comment, try to work on a fix #18606 research, code on making a new stub cv #18606 more try to make stub cv #18606 get it seemingly working, needs more tests 0.31 #18746 reply to comment #18746 review and apply to blead 4.26 #18820 reply to comment #18820 review new changes, look over related code #18820 try benchmarking #18820 more try benchmarking, can’t come to any conclusion either way 0.55 #18827 review and review discussion, research an…

Work continues at pace on the comprehensive audit of Perl's core documentation collection, which is funded through Google’s Season of Docs. The project was announced and began in May. As planned, it is expected to complete before the end of November.

Technical writer and communications specialist, Khawar Latif Khan is working in stages and has completed a full content audit alongside members of the community who have helped to test and review the documents, followed by a gap analysis, reviewing what is missing and where documents should be held.

Khawar began work on the project in mid-May. He sa…

20 October 2021, 1730 UTC https://meetings.opusvl.com/CATOpenSession

TPF is hosting this community open session to discuss the Community Affairs Team (CAT) and next steps. We want your thoughts and your ideas.

It would be great to see a broad section of the community, including people who don't normally engage in these discussions. If you have something to say, this is your opportunity.

Tony reports his August progress on maintaining the Perl 5 core: ``` Approximately 40 tickets were reviewed, and 7 patches were applied

[Hours] [Activity] 7.45 #18606 produce another case where the implementation fails, comment, try to work on a fix #18606 research, code on making a new stub cv #18606 more try to make stub cv #18606 get it seemingly working, needs more tests 0.31 #18746 reply to comment #18746 review and apply to blead 4.26 #18820 reply to comment #18820 review new changes, look over related code #18820 try benchmarking #18820 more try benchmarking, can’t come to any conclusion…

These are some answers for Week 134 of the Perl Weekly Challenge organized by Mohammad S. Anwar.

Spoiler Alert: This weekly challenge deadline is due in a few days from now (on October 17, 2021 at 23:59). This blog post offers some solutions to this challenge, please don’t read on if you intend to complete the challenge on your own.

• Write a script to generate first 5 Pandigital Numbers in base 10.*

As per the https://en.wikipedia.org/wiki/Pandigital_number, it says:

A pandigital number is an integer that in a given base has among 
its significant digits each digit used in…

Finally enjoying again ...

The month of September is very special to me personaly.

Why?

Well, I got married in the very same month 18 years ago. The best part is, I choose the day 11 to get married. I have never missed my wedding anniversary, thanks to all the TV news channel.

How?

On the day, every year I find every TV news channel talk about 9/11 episode. It works like reminder to me.

Let's get back to the main topic ...

For the last few months, I have been late in making monthly report on time. This has created many problems for me. One of them and the most important is that I don't remember what…

This warning was touched on in A Belated Introduction, but I thought it deserved its own entry.

When a Perl scalar comes into being, be it an actual scalar variable or an array or hash entry, its value is undef. Now, the results of operating on an undef value are perfectly well-defined: in a nuneric context it is 0, in a string context it is '', and in a Boolean context it is false.

The thing is, if you actually operate on such a value, did you mean to do it, or did you forget to initialize something, or initialize the wrong thing, or operate on the wrong thing? Because of the latter possibiliti…

These are some answers for Week 133 of the Perl Weekly Challenge organized by Mohammad S. Anwar.

Spoiler Alert: This weekly challenge deadline is due in a few days from now (on October 10, 2021 at 23:59). This blog post offers some solutions to this challenge, please don’t read on if you intend to complete the challenge on your own.

You are given a positive integer $N.

Write a script to calculate the integer square root of the given number.

Please avoid using built-in function. Find out more about it https://en.wikipedia.org/wiki/Integer_square_root.

Examples:

Input: $N…

Look, that's why there's rules, understand? So that you think before you break 'em. — Terry Pratchett, in Thief of Time.

A couple installments into this series of blog posts, I realized an introduction to Perl warnings would be appropriate, with some words on how to turn them off, and why you probably do not want to. Yes, this should have been the first post in the series, but I didn't know it would actually be a series, and, well, maybe better late than never.

The Perl compiler/interpreter can emit warnings when it finds things that may indicate a problem with the code. These are not (yet) enab…

These are some answers for Week 133 of the Perl Weekly Challenge organized by Mohammad S. Anwar.

Spoiler Alert: This weekly challenge deadline is due in a few days from now (on October 3, 2021 at 23:59). This blog post offers some solutions to this challenge, please don’t read on if you intend to complete the challenge on your own.

You are given a date (yyyy/mm/dd).

Assuming, the given date is your date of birth. Write a script to find the mirror dates of the given date.

Dave Cross has built cool site that does something similar.

Assuming today is 2021/09/22.

Example 1:

Input: 202…

[Update: the CPAN Request Tracker was saved. It’s now run by a new team of volunteers and none of my suggestions below are required.]

Two weeks ago, we learned that the CPAN Request Tracker was closing down early next year. I proposed a plan that CPAN authors could follow to ensure that their users can still find somewhere to report bugs in modules (and, perhaps more importantly, to see what bugs have already been reported in modules).

But that’s only part of the problem. In fact, it’s probably a minor part of the problem. If you’re an active CPAN author, then you probably already knew about the…

CPAN RT is going away. CPAN authors have until the beginning of March to extract any useful information from it.

RT is the “Request Tracker”, a bug tracking system that is written by Best Practical. For almost as long as I can remember, anyone who uploads a module to CPAN gets a free ticket queue for their module at rt.cpan.org. MetaCPAN assumes that’s where people should report bugs in your module and helpfully adds an “issues” link that goes to the appropriate page in RT.

But now that system is going away. It will be switched off on the 1st March 2021. The Perl NOC team is spread pretty thinly…

Blog posts are like busses. You wait months for one and then two come along on consecutive days!

Yesterday I wrote about how we didn’t need a blogging platform for the Perl community – all we really needed was a good-looking feed aggregator. I mentioned Perlsphere as one such aggregator.

Then Matthew commented, saying that Perlsphere looked a bit broken as Dave Cantrell’s posts from a few years ago frequently pop up there as new posts. I had a quick look at the problem and couldn’t quite work out what was going on. His web feed seems valid, but Perlsphere didn’t seem to recognise the dates of th…

I think it was at YAPC Copenhagen in 2008 that a small group of us first discussed the idea of building a shared blogging platform for the Perl community. It was over a year later that we launched blogs.perl.org.

I remember a lot of discussions over that time where we tried to thrash out exactly what we wanted to build. I know that one of my main drivers was that I wanted to replace the journals feature of use.perl. For those of you too young to remember, use.perl was a Perl community web site from the dawn of time. The site ran Perl news on its front page, but users could also have their own j…

What do you do when you’re stuck inside because Coronavirus means that your country is in lockdown? Well, you write a book, of course. Or, to be more accurate, you cobble together fifty or so old blog posts into a book.

So that’s what I’ve done. Now you can read some of your favourite Perl Hacks blog posts in a handy Kindle book. Other ebook marketplaces are, of course, available – but I haven’t had the time to make a version that’s available from anywhere else yet. That might follow if enough people ask for it.

The book is, predictably, called The Best of Perl Hacks and it’s available from Amaz…

Last week I was in Riga for this year’s European PerlCon (the conference formerly known as YAPC::Europe). As has become traditional, here’s my report of the conference.

My conference began on Tuesday night at the pre-conference meet-up. Most people get into town on the night before the conference starts and the organisers always designate a local bar as a meeting place. This time, as the conference was being held in a hotel, the meeting place was a room in the hotel just outside the main conference room. It’s always good to meet up with friends who you might not have seen since the previous con…

Hi there

How much have you contributed during the Hacktoberfest event yet?

CPAN needs a helping hand, not just during Hacktoberfest. I am raising the subject as Dave Cross recently blogged about his experience with one of the distributions hosted on CPAN in this blog post. It also reminds me of my early days when I created Perl a library around some of Google's public APIs. Two of them, WWW::Google::CustomSearch and WWW::Google::Places were used by many people, as I have had many queries related to them in the past. It is very common for an API provider to discontinue the service or move in a ne…

Hi,

I just had a meeting with a company in the UK that were looking for some consulting in Perl. After our conversation I felt that what they are interested in is not really where my expertise is, so I referred them to two other people who have a lot more experience in those areas. However I realized I don't know who is providing consulting or development service these days. So let me know. Who knows next time I might be able to refer the clients to you.

On the other hand I just found out that my client, where I do some refactoring on a web-application with some machine-learning backend (written…

Hi there

Have you joined the annual Hacktoberfest 2021 run by Digital Ocean?

If not then please join without any further delay. Hacktoberfest encourages participation in the open source community. You can earn a limited edition T-shirt by completing the challenge.

Not sure if you noticed, but this time they have made an interesting change by allowing open source maintainers to also take part in the contest. Ever since I started The Weekly Challenge, I have hardly found time to dedicate to Hacktoberfest. Last year I could only submit 6 PRs, enough to win the contest, since you only need to submit…

Hi there

I like working on legacy code whether it is Perl, Python or some other language, because it is code that is already very valuable to the organization that uses it. It is great to help the maintainers understand the code better and to give them confidence in making changes to the code.

There are a number of language specific tools that can help you while dealing with legacy code. For example Perl Critic which is mentioned in at least two posts this edition. There are more generic things, like setting up a good CI system which is mentioned by Gugod.

The ideal situation is when both managem…

Hi there

If you remember, I mentioned the Outreachy program in the editorial of the weekly newsletter edition #522. It has finally come to an end as Rosheen Naeem successfully completed the internship as reported by the TPF in a blog post. Congratulations Rosheen.

The Perl Foundation is looking for mentors and project ideas for the next Outreachy rounds. If you have Perl or Raku project ideas, please get in touch with TPF.

Many years ago, I was approached for help by the Open Food Facts team as they found out about my distribution, Food::ECodes. Unfortunately it didn't work out as I was too busy…

Hi there!

A long long time ago, when I was in high school, I participated in the annual competition of KöMaL, the Mathematical and Physical Journal for High Schools. (Look for the little UK flag for the English version). Back then we sent in the solution by snail-mail and we only had to write our name to be identified. However people with very common names were asked to include a 3-digit number between their names. There was no verification that two people with the exact same name did not pick the same number, but the chances were slim. Because my name is way too common in Hungary I picked the…

Today I was invited to join Gabor Szabo for a live pair programming session, where we worked on adding Docker and CI to his course management application. You can view the video of our informal competition who is the worst typist here.

At first I was bit skeptical about the concept of live coding (who wants to watch people google^w code for two hours?), but in the end it was a funny and informative (for me) session. Maybe I'm just totally deprived of live human interaction (thanks, Corona), but I think I'd enjoy similar sessions also under normal circumstances.

• I forgot a lot of…

During the great RT will be shutdown craze earlier this year, I updated my Dist::Zilla setup to use a custom author bundle (Dist::Zilla::PluginBundle::Author::DOMM) so I can unify my Dist::Zilla config in one place (instead of copying dist.ini from project to project, adding & modifying it from time to time, but never backporting improvements to older projects).

Two of my decisions might have been not too smart (as indicated by various pull requests), so I'm now looking for feedback...

I stopped generating META.yml files and now only generate META.json. As far as I can tell…

In some regards, I'm a very old school person. For example I do not like the concept of streaming audio (via Spotify et.al.). I want MP3s on my hard disk (and/or vinyl on my record player). I want access to my music when I'm offline (and I'm offline a lot) and without using a so-called smart phone (I prefer vintage USB-stick MP3 players). My partner thinks the same (I guess 25+ years of my propaganda had some influence..).

But "modern" sites make it rather hard to actually download content (even if it's free). They offer links to a myriad of apps, but often no download button. At least a lot of…

This was another fun one. It took me some time to get the logic right (or left?), but in the end I came up with a nice solution. BTW, this will be the last daily blog post, as I'll have to finish some work projects, and start with some holiday projects.

https://adventofcode.com/2020/day/12

my @in  = map { [/^(\w)(\d+)$/] } <>;
my @dir = qw(N E S W);
my $cur = 1;
my $r   = 0;
my $c   = 0;

We again parse the map into a list of ops and values. Then we set up some things we'll need, like the list of directions and the current heading ($cur) which is an index into the dir-array. $r and $c…

Finally, some Game of Life

https://adventofcode.com/2020/day/11

Today I needed quite a bit of code, so let's split it up:

my @map = map { chomp; [ split // ] } <>;
my $h   = @map;
my $w   = $map[0]->@*;
my $occ = 0;
my $max = 4;
my @around =
    ( [ -1, -1 ], [ -1, 0 ], [ -1, 1 ], [ 0, -1 ], [ 0, 1 ], [ 1, -1 ], [ 1, 0 ], [ 1, 1 ] );

After getting the input and storing it into a 2-dimensional list, I set up some other things we'll need: the **h**eight and **w**idth of the map, the number of occupied seats, the maximum number of neighbors and a list of "vectors" to look around (left…

Due to extreme workload at my job, we have not made as much progress as we would like.

My tireless collaborator Erik Huelsmann have fixed a few bugs and they have made into release 1.57 released today.

We hope to pick up on the forthcoming 2.0 release as soon as things settle at a somewhat normal level again.

• The 2.0 milestone is documented here, as in a list of PRs and issues
• And the 2.0 projected road map is documented here as a set of notes and issues.

Here follows the change log of release 1.57.

The original is available on GitHub

• P…

I often use Google Drive to transfer files between devices, for example from my Mac to my Linux laptop. It works great, but there can be some boring repetitive work involved depending on how often you do the same operation. For example, when I want to transfer a file from the Mac, I open up a web browser (usually Google Chrome) and point it to drive.google.com, the Google Drive web interface. From here, I try to locate the directory I want to upload the file to which might involve some scrolling in the directory listing. After that, I need to click on the directory name to view its content. Ne…

Whether learning a programming language, working through a problem, or trying to understand a new library, it may be tempting to flail around crafting just the right search engine query or cry for help on a forum like Stack Overflow. But look at any guide to asking good questions and you’ll find this commandment at the top: do your research. And one of the primary sources of that research is the official documentation for the language or library in question.

Fortunately, Perl and its modules come installed with extensive documentation, also available on the Web. Locally, yo…

Earlier today I took my best drawing software (Gimp), gathered all my skills and it's finally time to unveil the ephemeral miniconf flyer!

Spread the word with this flyer!

I really enjoyed reading Mark Gardner's blog post about web frameworks this week, but in one way it made me feel slightly sad.

It made me sad because it got me thinking about how a lot of Perl web development seems to be stuck in the past. Oh, don't get me wrong - I know that modern Perl web frameworks allow you to do anything that you could do with technologies like Node.js. But I don't know how widely-known that information is. If you spend much time reading the Perl questions on Stack Overflow, you'll soon realise just how much Perl web development still consists of CGI programs running in a…

Challenge, My solution

You are given a positive integer $N.

Write a script to calculate the integer square root of the given number.

Please avoid using built-in function.

So that wikipedia page has enough formulas to get a math nerd very excited. For me it looks a little to complex to understand. So I took a very simple approach. Start from one, and keep counting upwards while the square of the next number is equal or less to the input value.

This seems reasonably efficient for what we are doing. Even finding the integer square root of 10,000,000,00…

The examples used here are from The Weekly Challenge problem statement and demonstrate the working solution.

Write a script to generate first 5 Pandigital Numbers in base 10.

use strict;
use warnings;
##
# Write a script to generate first 5 Pandigital Numbers in base 10.
##
use boolean;

sub first_n_pandigitals {
    my ($n)         = @_;
    my $found       = false;
    my $pandigitals = [];
    my $x           = 1_000_000_000;
    do {
        my $test = $x;
        push @{$pandigitals}, $x
          if ( $test =~ tr/0//d ) > 0
          && ( $test =~ tr/1//d ) > 0…

The examples used here are from The Weekly Challenge problem statement and demonstrate the working solution.

You are given an array of positive integers, such that all the numbers appear even number of times except one number. Write a script to find that integer.

use strict;
use warnings;
sub find_odd_occurring{
    my %counts;
    for my $x (@_){
        $counts{$x}++;
    }
    for my $x (keys %counts){
        return $x if $counts{$x} % 2 != 0;
    }
}

MAIN:{
    print find_odd_occurring(2, 5, 4, 4, 5, 5, 2) . "\n";
    print find_odd_occurring(1, 2, 3, 4, 3, 2, 1, 4, 4) . "\n…

The examples used here are from The Weekly Challenge problem statement and demonstrate the working solution.

You are given a tree and a node of the given tree. Write a script to find out the distance of the given node from the root.

use strict;
use warnings;
package Tree129{
    use boolean;  
    use Tie::RefHash;
    use Class::Struct; 

    package Node{
        use boolean;  
        use Class::Struct; 
        struct(
            value => q/$/,
        );  
        true; 
    }  

    package Edge{
        use boolean;  
        use Class::Struct; 
        struct…

The examples used here are from The Weekly Challenge problem statement and demonstrate the working solution.

You are given m x n binary matrix having 0 or 1. Write a script to find out maximum sub-matrix having only 0.

use strict;
use warnings;
use Tree::Suffix; 

sub maximum_sub_matrix{
    my @matrix = @_;
    my @sub_matrix;

    my %indices;  
    my @indices_maximum;
    my $indices_previous = "";
    my $indices_current = "";
    my $tree = new Tree::Suffix(); 
    for my $i (0 .. @matrix - 1){
        $indices_current = "";
        for my $j (0 .. @{$matrix[0]} - 1…

The examples used here are from The Weekly Challenge problem statement and demonstrate the working solution.

You are given two sets with unique numbers. Write a script to figure out if they are disjoint.

use strict;
use warnings;
use boolean;

sub disjoint{
    my($list1, $list2) = @_;
    my @a = map { my $n = $_; grep  $n == $_ , @{$list2} }  @{$list1};
    return boolean(@a == 0);#boolean() used for better stringification
}

MAIN:{
    my(@S1, @S2);
    @S1 = (1, 2, 5, 3, 4);
    @S2 = (4, 6, 7, 8, 9);
    print disjoint(\@S1, \@S2) . "\n";
    @S1 = (1, 3, 5, 7, 9);
    @S2…

The examples used here are from The Weekly Challenge problem statement and demonstrate the working solution.

You are given a positive integer $N. Write a script to print count of numbers from 1 to $N that don’t contain digit 1.

use strict;
use warnings;
sub has_1{
    my($x) = @_;
    return 1 if $x =~ tr/1//d > 0;
    return 0;   
}

sub count_with_1{
    my($n) = @_;
    my $x = 1;  
    my $count = 0; 
    {
        $count += has_1($x); 
        $x += 1;
        redo if $x <= $n; 
    }
    return $count; 
}

sub count_without_1{
    my($n) = @_;
    return $n - count_with_1($n…

You may have noticed that some perl.org services were unavailable this weekend.  Email continued to flow, and no data was lost.

The short version of the story is that we were bitten by this bug. and learned a lot about how Kubernetes works while we figured out what the issue was.

Sorry for any inconvenience!

We sent the below email to all the CPAN Mirror contacts yesterday:

An Important Update about the CPAN Mirror List

You're receiving this email because you're listed as a contact point for a CPAN mirror. Thank you! The mirror network has been a huge part of CPAN’s success. Soon, the way clients use CPAN mirrors is changing. You don't need to do anything, but after reading this email, you might want to.

Some background: For a long time, when the CPAN client (aka CPAN.pm) started up for the first time, it prompted users to configure it by picking a nearby mirror. The assumption was that it would be b…

 The perl.com domain was hijacked this morning, and is currently pointing to a parking site.  Work is ongoing to attempt to recover it.

 We encourage you NOT to visit the domain, as there are some signals that it may be related to sites that have distributed malware in the past.

  Some users may have it selected as their CPAN mirror.  To update your mirror in CPAN.pm use o conf urllist http://www.cpan.org/

# perl -MCPAN -eshell
cpan shell -- CPAN exploration and modules installation (v2.20)
Enter 'h' for help.

cpan[1]> o conf urllist http://www.cpan.org/
Please use 'o conf commit' to make the config perma…

Update 2/21/2021:

Updated information about the future of rt.cpan.org can be found at https://news.perlfoundation.org/post/rt-cpan-org-future

Update 2020-12-13:

rt.cpan.org will be sunset on March 1st, 2021 due to low and declining use.

Back when we started this service, it filled a need by providing a place for CPAN authors to track bug reports and feature requests. In recent years github.com and other sites have added issue tracking to their git repo hosting and many CPAN authors have migrated to these sites.

If you are a CPAN author, there are several tools to help you migrate existing tickets:

• h…

Prompted by this post on PAUSE running out of disk space, I thought I'd refresh my own post "Top 50 authors by disk space on BackPAN" (Dec 26, 2019) and add a stat for CPAN too. Hopefully this will be a regular post, ish.

On CPAN

Source: https://www.cpan.org/indices/find-ls.gz (~14MB as of this writing), but more readily used: https://www.cpan.org/indices/du-k.gz (~80KB as of this writing).

Total size of CPAN:

% zcat du-k.gz | perl -lne'@F=split /\s+/, $_, 2; $F[1] eq "." and printf "%.1fGB\n", $F[0]/1024/1024 and last'

29.0GB

So, CPAN is not that big by today's…

1. App::Netdisco - An open source web-based network management tool.
   • Version: 2.050001 on 2021-10-12
   • Votes: 13
   • Previous version: 2.049009 was 6 days before
2. CHI - Unified cache handling interface
   • Version: 0.61 on 2021-10-13
   • Votes: 51
   • Previous version: 0.60 was 6 years, 4 months, 6 days before
3. Cpanel::JSON::XS - cPanel fork of JSON::XS, fast and correct serializing
   • Version: 4.27 on 2021-10-14
   • Votes: 39
   • Previous version: 4.26 was 6 months, 2 days before
4. DateTime::TimeZone - Time zon…

This is the weekly favourites list of CPAN distributions. Votes count: 27

This week there isn't any remarkable distribution

Build date: 2021/10/17 07:52:38 GMT

Clicked for first time:

• AnyEvent::Subprocess - flexible, OO, asynchronous process spawning and management
• PDL::DSP::Fir - Finite impulse response filter kernels.
• POE::Component::Server::Inet - a super-server daemon implementation in POE
• Test::WWW::WebKit2 - Perl extension for using an embedding WebKit2 engine for tests

Increasing its reputation:

• AnyEvent (+1=152)
• AnyEvent::Fork (+1=15)
• AnyEvent::Fork::Pool (+1=10)
• AnyEvent::Fork::RPC (+1=10)
• AnyEven…

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-10-17 06:44:32 GMT

1. Perl optional capture groups not working? - [3/3]
2. How do I format qw lists using perltidy? - [3/1]
3. Perl one-liner regex doesn't substitute correctly - returns error - [3/1]
4. Automate values from text files to each sheet of excel file - [2/2]
5. Perl LWP::UserAgent parse response JSON - [2/2]
6. perl regex to remove initial all-whitespace lines from a string: why does it work? - [2/2]
7. Why doesn't my XPath expression find a newly added node in an XML document…

1. App::Netdisco - An open source web-based network management tool.
   • Version: 2.049009 on 2021-10-06
   • Votes: 13
   • Previous version: 2.049005 was 27 days before
2. DateTime::TimeZone - Time zone object base class and factory
   • Version: 2.49 on 2021-10-02
   • Votes: 17
   • Previous version: 2.49 was before
3. Encode - character encodings in Perl
   • Version: 3.15 on 2021-10-08
   • Votes: 54
   • Previous version: 3.12 was 1 month, 30 days before
4. JSON::Validator - Validate data against a JSON schema
   • Version: 5.02 o…

This is the weekly favourites list of CPAN distributions. Votes count: 39

Week's winners (+3): Dist::Zilla::MintingProfile::FFI

Build date: 2021/10/09 22:38:11 GMT

Clicked for first time:

• autocroak - Replace functions with ones that succeed or die with lexical scope
• Color::TupleEncode - Encode a tuple (vector) into a color - useful for
• HTTP::Accept - Parse the HTTP header 'Accept'
• Log::Any::Adapter::JSON - One-line JSON logging of arbitrary structured data
• Pass::OTP - Perl implementation of HOTP / TOTP algorithms

Increasing its reputation:

• Acme::Magic::Pony (+1=3)
• App::cpanminus::reporter (+1=35)
• App::cpm…

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2021-10-09 21:41:38 GMT

1. python regex where a set of options can occur at most once in a list, in any order - [11/7]
2. Force Perl to stop special processing of command line arguments if -e eval switch is used - [5/1]
3. How do I get it to stop removing what was previously in the text file? - [4/2]
4. How to define multiple Perl packages in one file that are inter-dependent - [3/3]
5. Searching Perl array with regex and return single capturing group only - [3/3]
6. How to use Perl's Text…

Foto by Carsten Tolkmit 

We’ve had a week of heated discussion within the Perl 6 community. It is the type of debate where everyone seems to lose. It is not the first time we do this and it certainly won’t be the last. It seems to me that we have one of those about every six months. I decided not to link to many reiterations of the debate in order not to feed the fire.

Before defining sides in the discussion it is important to identify the problems that drives the fears and hopes of the community. I don’t think that the latest round of discussions was about the Perl 6 alias in itself (Raku), but…

When I need to program something, most of the time I use Perl 5, Go or Perl 6. Which one depends on the existence and maturity of libraries and the deployment strategy (and I must admit, probably my mood). Most applications I write at work are not that big, but they need to be stable and secure. Some end up in production as an extension or addition to the software that is the core of our authentication and authorisation infrastructure. Some programs are managed by other teams, e.g. of sysadmin-type applications like the monitoring of a complex chain of microservices. Finally, proof of concept…

There was an interesting discussion on #perl6 (irc.freenode.net) about the use of rakudobrew as a way for end-users to install Rakudo Perl 6 (see how-to-get-rakudo).

rakudobrew, inspired by perlbrew, is a way to manage (and compile) different versions of rakudo. nine argued that it’s primarily meant as a tool for rakudo developers. Because of the increased complexity (e.g. when dealing with modules) it’s not targeted at end-users. While being a big fan of rakudobrew, I agree with nine.

The problem is that there are no Linux binaries on the download page (there are for MacOS and Windows), so user…

EDITED on 20170211: syntastic-perl6 configuration changes

If you’re a Vim user you probably use it for almost everything. Out of the box, Perl 6 support is rather limited. That’s why many people use editors like Atom for Perl 6 code.

What if with a few plugins you could configure vim to be a great Perl 6 editor? I made the following notes while configuring Vim on my main machine running Ubuntu 16.04. The instructions should be trivially easy to port to other distributions or Operating Systems. Skip the applicable steps if you already have a working vim setup (i.e. do not overwrite you .vimrc fil…

I think that Perl 6, as a fairly new language, needs good tooling not only to attract new programmers but also to make the job of Perl 6 programmers more enjoyable. If you’ve worked with an IDE before, you certainly agree that syntax checking is one of those things that we take for granted. Syntastic-perl6 is a plugin that adds Perl 6 syntax checking in Vim using Syntastic. Syntastic is the leading Vim plugin for syntax checking. It supports many programming languages.

If the plugin proves to be useful, I plan on a parallel track for Perl 6 support in Vim. On one hand, this plugin will track th…