Perl Weekly Challenge 282: Good Integer

These are some answers to the Week 281, Task 1, 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 August 18, 2024, at 23:59). This blog post provides some solutions to this challenge. Please don’t read on if you intend to complete the challenge on your own.

Task 1: Good Integer

You are given a positive integer, $int, having 3 or more digits.

Write a script to return the Good Integer in the given integer or -1 if none found.

A good integer is exactly three consecutive matching digits.

Example 1

Input: $int = 12344456
Output: "444"

Example 2

Input: $int = 1233334
Output: -1

Example 3

This week in PSC (149) | 2024-05-30

This week it was just Paul and Philippe; we discussed the final changes for the upcoming RC2 and stable release, and marked some issues/PR as release blockers.

Graham expects to release 5.40-RC2 before the week-end.

PTS 2024 - Day 4 - here comes the sun... it's all right!

Following on from The bad days

We made the decision that our problems in Kubernetes were exactly the sort of thing that should not be distractions to the project. We had been trying to save costs when we choose Hetzner for hosting... especially as we did not know where our ElasticSearch cluster (needing 3x32Gig of ram) was going to live. The great news is last week ElasticSeach agreed to host this for us, which really is a game changer.

With this in mind, we reviewed hosting again... Digital Ocean (DO) provides a fully managed Kubernetes control plane, with high availability load balancer, Postgres Database integration and storage options e.g. we can focus on deploying to it and not managing it.

Announcing The London Perl and Raku Workshop 2024 (LPW)

Hey All,

Yes, we're back we'd like to announce this year's LPW:

https://act.yapc.eu/lpw2024/

WHEN: TBC, most likely Saturday 26th October 2024
WHERE: TBC

Please register and submit talks early - it gives us a better idea of numbers. The date is tentative, depending on the venue, but we'd like to aim for the 26th October 2024.

This will be the 20th anniversary of LPW (in terms of years, not number of events). We might try to do something special...

The venue search is currently in progress. The 2019 venue has turned into a boarding school so we can't use that any more due to safeguarding issues. We don't want to go back to the University of Westminster so we are searching for a venue.

Perl Weekly Challenge 281: Knight's Move

These are some answers to the Week 281, Task 2, 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 August 11, 2024, at 23:59). This blog post provides some solutions to this challenge. Please don’t read on if you intend to complete the challenge on your own.

Task 2: Knight’s Move

A Knight in chess can move from its current position to any square two rows or columns plus one column or row away. So in the diagram below, if it starts a S, it can move to any of the squares marked E.

Write a script which takes a starting position and an ending position and calculates the least number of moves required.

week_281_task_2.png

Example 1

Phishing Attempt on PAUSE Users

I just received an E-Mail purporting to be from the PAUSE Team, claiming a compromise of a server. It was written with some thought, referencing the account name of someone well known and trusted in our community. On closer inspection however, it was merely an attempt to phish PAUSE usernames and passwords via a supposed alternative login server.

I'm sure many of us are old enough and experienced enough to detect and ignore this type of attack. But in case you aren't (welcome!) or if you are feeling a bit out of practice, then please remember to only log in via the official PAUSE entry point.

2024 TPRC Submission Date Extended thru April 20th

The deadline for talk and paper submissions to the 2024 TPRC has been Officially extended through April 20th for both the regular Perl and Raku tracks; and also the Science Track.

Update for the Science Track submissions, we have a small, but solid set of submissions and are expecting a few more. The Science Perl Committee is committed to helping anyone submitting a serious entry to succeed. If you're hesitating at all because you're afraid of getting rejected, please be reassured we want as many people to be part of this inaugural Science Track, as possible.

Please note, acceptable topics DO include white papers discussing implementation details of the Perl or Raku interpreters, experimental language features, implementations, benchmarks, etc.

I personally and strongly encourage you to submit an abstract to the Science Track. And if you don't want to write a paper, I strongly encourage you to submit a regular conference talk.

Brett Estrade (OODLER)

This week in PSC (144) | 2024-04-11

The three of us met, and:

  • merged the deëxperiment PR
  • agreed we should additionally discuss if the now-stable features (try, extra_paired_delimiters) should be included in the :5.40 feature bundle
  • reported feedback from PPC implementors, which can be summarized as “life happened, will get back to work soon”
  • continued to triage latest reported bugs and look for release blockers (Currently we have 8 potential blockers, though 2 are easy documentation fixes)

Perl Weekly Challenge 281: Check Color

These are some answers to the Week 281, Task 1, 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 August 11, 2024, at 23:59). This blog post provides some solutions to this challenge. Please don’t read on if you intend to complete the challenge on your own.

Task 1: Check Color

You are given coordinates, a string that represents the coordinates of a square of the chessboard as shown below:

week_281_task_1.png

Write a script to return true if the square is light, and false if the square is dark.

Example 1

Input: $coordinates = "d3"
Output: true

Example 2

Input: $coordinates = "g5"
Output: false

Example 3

A FOSS Ecosystem Checklist for the Benefit of Maintainer Sustainability

  1. Maintainers and authors are found everywhere throughout our dependency trees. This includes the authors of the tooling others use for maintaining, building, testing, writing and running the infrastructure they depend on. Even maintainers depend on other maintainers.
  2. Maintainers’ mental health and well-being is also a dependency.
  3. So is their outlook on the sustainability of their projects, both in personal, technical, systemic and economic respects.

This means that personal, technical, systemic and economic well-being in the end are all actual and real dependencies* for the businesses that rely on these people and their projects.*

What can an ecosystem provide to make the lives of these maintainers easier in this regard?

continued

A Twist of a Date


Here’s a quickie little post, just to remind everyone of the usefulness of Date::Easy.

Recently, I downloaded some pictures from Google Photos, and unzipped them into my directory of other photos.  I ended up with something that looked like this:
'2024-03-01 09.34.44.jpg'
'2024-03-01 13.18.34.jpg'
'2024-03-31 14.25.27.jpg'
'2024-03-31 14.27.09.jpg'
'2024-03-31 14.27.40.jpg'
'2024-03-31 14.28.23.jpg'
'2024-03-31 14.30.03.jpg'
'2024-03-31 14.33.32.jpg'
'2024-03-31 14.34.10.jpg'
'2024-03-31 14.36.01.jpg'
PXL_20240331_212527635.jpg
PXL_20240331_213601848.jpg
PXL_20240331_212823287.jpg
PXL_20240331_212709501.jpg
PXL_20240331_213332846.jpg
PXL_20240331_212740070.jpg
PXL_20240331_213410146.jpg
PXL_20240331_213003515.jpg

Well! said I.  This is hardly ideal.  A foolish consistency may well be the hobgoblin of little minds, as Emerson once wrote, but there is certainly something to be said for a sensible consistency.  But ... how to achieve it?

This week in PSC (142) | 2024-03-28

  • Discussed some specific ideas for future perl development - more ways to allow CPAN modules to experiment with new ideas, import some possibly-stable ideas from CPAN into core.

  • Reviewed the list of ongoing experiments in perlexperiment.pod to work out what can now be declared stable. We’re technically past “user visible changes” freeze but maybe the list will be happy with these changes anyway.

  • Observed that SSL-in-core still hasn’t made any progress, and wondered further on how we can unstall it and try to get someone working on it eventually. Maybe writing a PPC doc would help?

Perl Weekly Challenge 280: Count Asterisks

These are some answers to the Week 280, Task 2, 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 August 4, 2024, at 23:59). This blog post provides some solutions to this challenge. Please don’t read on if you intend to complete the challenge on your own.

Task 1: Count Asterisks

You are given a string, $str, where every two consecutive vertical bars are grouped into a pair.

Write a script to return the number of asterisks, *, excluding any between each pair of vertical bars.

Example 1

Input: $str = "p|*e*rl|w**e|*ekly|"
Ouput: 2

The characters we are looking here are "p" and "w**e".

Example 2

TPRC/Science Track Submission Dates and Deadlines Coming Fast!

Talk submissions are still open, and we are seeking proposals on a wide variety of subjects. This includes language features, personal projects, applications like Koha, and anything that may be of general interest to Perl and Raku programmers.

To submit an abstract, please see the authoritative Science Perl CFP or for a standard talk visit the familiar Papercall site.

Please note it is our (the Science Perl Editorial Subcommittee) goal to be able to accept as many perl+science papers and posters as possible, as such our editorial process is designed to be very friendly.

Science Track Deadlines (initial submission is same date/time as the standard talk tracks):

  • Abstract submission deadline: April 5th, 2024 (23:59:59 UTC)
  • Abstract acceptance emails sent: April 15th, 2024
  • Draft full paper due: May 15th, 2024
  • Draft full paper feedback emails sent: May 31, 2024
  • Final full paper due: June 7th, 2024
  • Final papers approved: June 15th, 2024

PLEASE SPREAD THE WORD!

Thank you and I am looking forward to some very good things to see in Vegas, baby!

Brett Estrade (OODLER)

Changes in MooX::Role::Parameterized

What is it good for?

If you’ve never worked with MooX::Role::Parameterized or MooseX::Role::Parameterized, you might wonder what is a parameterized role at all?

Roles are used when you need to share behaviour among several classes that don’t have to be related by inheritance. Normally, a role just adds a bunch of methods to the class that consumes it (there’s more, you can for example specify which other methods the role expects to already exist).

A parameterized role makes it possible to provide parameters for the consumed role. This way, you can adjust the behaviour for each consuming class.

This week in PSC (140) | 2024-03-14

This week, we discussed:

  • Further look down open bugs to tag some as being release-blocker
  • Do we want to revert PR21915? - discussed in its own email thread
  • Thought of a couple of issues to discuss with the wider group at the upcoming PTS
    • How to handle “important author is AWOL” for upstream CPAN issues
    • How to not break CPAN tests when adding new warnings to core

Perl Weekly Challenge 280: Twice Appearance

These are some answers to the Week 280, Task 1, 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 August 4, 2024, at 23:59). This blog post provides some solutions to this challenge. Please don’t read on if you intend to complete the challenge on your own.

Task 1: Twice Appearance

You are given a string, $str, containing lowercase English letters only.

Write a script to print the first letter that appears twice.

Example 1

Input: $str = "acbddbca"
Output: "d"

Example 2

Input: $str = "abccd"
Output: "c"

Example 3

Input: $str = "abcdabbb"
Output: "a"

Twice Appearance in Raku

Reading sequences from FASTA format alignment by Bio::Perl

Show code for TL;DR:

CFP: Science Track Papers Needed at The Perl & Raku Conference

CALL FOR PAPERS NOW OPEN!

  • Science Track at The Perl & Raku Conference
  • June 25 - 27, 2024 (talk dates)
  • Las Vegas, Nevada, USA

click here to submit your abstract

You may submit your Science Track abstracts here! Don't wait, do this today! Prior registration to the Perl Conference is not a condition for acceptance, however individuals with accepted papers and posters are expected to register for and attend the Conference in person*. You may register for the Perl & Raku Conference here. (Note: in the past, the Conference registration fee has been waived for speakers; it is expected that this will be the case again this year, but at this time there are no guarantees.)

  • let us know if this is impossible, exceptions may be considered in some extenuating circumstances

Deadlines:

  • Abstract submission deadline: April 05, 2024 (23:59:59 UTC)
  • Full paper deadline: May 15th, 2024 (23:59:59 UTC)

This week in PSC (148) | 2024-05-16

In anticipation for the stable release, we:

  • revived the “HTTPS out-of-the-box” project: the CPAN Security Group committed to help us select a workable solution, with a goal of implementing it in time for Perl 5.42
  • discussed the minutiae of the next stable release
  • decided to do it on 2024-05-24 (Friday)

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