Spoiler Alert: This weekly challenge deadline is due in a few days from now (on May 12, 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: Number Game
You are given an array of integers, @ints, with even number of elements.
Write a script to create a new array made up of elements of the given array. Pick the two smallest integers and add it to new array in decreasing order i.e. high to low. Keep doing until the given array is empty.
I am always flattered to be invited to the Perl Toolchain Summit, and reinvigorated in working on MetaCPAN each time.
Currently I am focused on building on the work I and others did last year in setting up Kubernetes for more of MetaCPAN (and other projects) to host on.
Last week I organised the Road map which was the first thing we ran through this morning. I was very fortunate to spend the day with Joel and between us we managed to setup:
- Hetzner (hosting company) volumes auto provisioning in the k8s cluster
- Postgres cluster version (e.g. with replication between nodes)
I had a few discussions with other projects interested in hosting and this has helped us start work on what we need to be able to provision and how.. especially with attached storage which has been some what of a challenge but we are heading towards a solution.
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.
Spoiler Alert: This weekly challenge deadline is due in a few days from now (on May 12, 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: Magic Number
You are given two arrays of integers of same size, @x and @y.
Write a script to find the magic number that when added to each elements of one the array gives the second array. Elements order is not important.
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)
Spoiler Alert: This weekly challenge deadline is due in a few days from now (on May 5, 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: Line Count
You are given a string, $str, and a 26-items array @widths containing the width of each character from a to z.
Write a script to find out the number of lines and the width of the last line needed to display the given string, assuming you can only fit 100 width units on a line.
A few people asked me about the distinctions between YAPC::Japan and other Perl events worldwide, prompting me to write below. Before delving into the specifics, I must preface that my experience is primarily rooted in YAPC::Hiroshima 2024, the only YAPC::Japan event I attended. It's important to say that comparing Perl events across different regions isn't about establishing superiority or inferiority; organizing conferences requires considerable resources and effort irrespective of location. Each conference has its unique approach and metrics for success. The observations I offer are purely subjective and reflect my personal views.
If you have been following along with the efforts to add a Science Track to the TPRC, now is the time to seriously consider submitting a peer reviewed paper. The TPRC Call for Papers has opened with information on submitting to any of the 3 tracks. Note that the science papers are submitted to the Perl Community's Science Perl website, which is linked in the TPRC's announcement.
You can submit your talk Ideas at https://tprc.us/talks Talk submission deadline is April 5th, Midnight UTC. Talks must be given live and in-person. If you are looking for any talk ideas, try out the conference wiki.
New this year, we are accepting submissions for a peer reviewed Science track. Those talks should be submitted at https://science.perlcommunity.org/
Visit the TPRC 2024 website at https://tprc.us/ Follow us on Twitter: @PerlConferences Like us on Facebook: The Perl Foundation (@tpf.perl) Subscribe to the mailing list: https://tprc.us/subscribe
Any questions about the Science Track should be directed to "science at perlcommunity.org" or visit us at #science on irc.perl.org.
Spoiler Alert: This weekly challenge deadline is due in a few days from now (on May 5, 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: Product Sign
You are given an array of @ints.
Write a script to find the sign of product of all integers in the given array. The sign is 1 if the product is positive, -1 if the product is negative and 0 if product is zero.
Example 1
Input: @ints = (-1, -2, -3, -4, 3, 2, 1)
Output: 1
The product -1 x -2 x -3 x -4 x 3 x 2 x 1 => 144 > 0
Crypt::Passphrase is a module for managing passwords. It allows you to separate policy and mechanism, meaning that the code that polices authorization doesn’t have to know anything about what algorithms are used behind the screen, and vice-versa; thus making for a cryptographically agile system.
It’s not only handling the technical details of password hashes for you but also it deals with a variety of schemes. It’s especially useful for transitioning between them.
A longer version of this post, including the full timeline as we know it, is available at security.metacpan.org
Between Dec 2023 and Jan 2024, vulnerabilities in Spreadsheet::ParseExcel and Spreadsheet::ParseXLSX were reported to the CPAN Security Group (CPANSec). This document describes the timeline and analysis of events.
Đình Hải Lê discovered an arbitrary code execution (ACE) vulnerability in the Perl module Spreadsheet::ParseExcel, version 0.65 and earlier.
An attacker, exploiting this vulnerability, would craft an Excel file containing malicious code encoded as a number format string, which is executed when the file is parsed by Spreadsheet::ParseExcel. Basically, untrusted data is passed to the Perl eval function enabling arbitrary code execution.
A detailed write up of the vulnerability and Proof of Concept (PoC) is available at
https://github.com/haile01/perl_spreadsheet_excel_rce_poc
Spoiler Alert: This weekly challenge deadline is due in a few days from now (on April 28, 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: X Matrix
You are given a square matrix, $matrix.
Write a script to find if the given matrix is X Matrix.
A square matrix is an X Matrix if all the elements on the main diagonal and antidiagonal are non-zero and everything else are zero.
After three years of not organising and one successful PTS in Lyon last year, we might have become a bit complacent and forgotten how taxing organizing an event is... After a very slow preparation, we are very pleased to announce the fourteenth edition of the Perl Toolchain Summit!
In 2024, we will be meeting in Lisbon, Portugal, from Wednesday April 25 to Sunday April 28. As has become customary, participants will stay at the hotel, and work in the meeting rooms dedicated for the event.
Get ready for a night of code, community, and culinary delights at the TPRF Sponsored Dinner during FOSDEM! 🍽️✨ Join us on Saturday, February 3rd, for a three-course feast and vibrant conversations.
📅 When: Saturday February 3rd, evening
📍 Where: Bruxelles
🎉 What's Cooking: An unforgettable evening filled with tech talks, networking, and delicious bites!
🤩 How to Join:
RSVP now by filling in this form below and secure your spot! Let's make this dinner a celebration of code and camaraderie.
