by Dave Cross (DAVECROSS)

Dave wrote: "Talking to Perl programmers, I’ve noticed how easy it is to miss new additions to the language. We learn Perl, get comfortable with it, and get on with writing code. Meanwhile, Perl keeps moving
Modern Perl Tips is a chance to catch up a little at a time. Each tip takes a useful feature you might not have come across, shows how it helps with an everyday problem, and points you towards the documentation. You might discover a clearer way to write something you’ve been doing for years."

by Gene Boggs (GENE)

Gene writes: "Since discovering Perl real-time MIDI and writing about creating async drums with it, I’ve dug deeper into what’s possible. I have a few music and MIDI modules on CPAN and like to put them to use in real time, now that I have been enlightened by zen master John Barrett. Ha :D"

by Giuseppe Di Terlizzi

URI-PackageURL implements two specifications that are becoming central to software supply-chain security: PURL (Package URL, a uniform way to identify a software package across ecosystems ) and VERS ((Version Range, a universal notation for version ranges)

by Dean Hamstead (DJZORT)

Dean writes: "NetAddr::IP 4.079 was released in 2016 and has sat there since. I have started working on it recently, and 4.080_05 is the fifth trial release since. It is on CPAN now, and the tarball is ready for you to install!"

by Richard C. Jelinek

pperl aka. perl implemented in Rust.

by Robert Acock (LNATION)

Context::Vars gives you a variable that holds a value per context, and the context follows the work: into every sub called, into callbacks, and across await.

by Gal Ratner

Some history and why Perl won and then lost the battle.

by Robert Acock (LNATION)

HAMT is a new CPAN distribution that gives Perl three persistent containers: HAMT::Map, HAMT::Set and HAMT::Vector. "Persistent" here means an update never changes the container you call it on. It returns a new one, and the old one stays exactly as it was.

by Robert Acock (LNATION)

Time::Keeper is a new CPAN distribution for dates and times. A value is an instant and the zone it is read in, and that is the whole of it: no state to mutate, no locale object, no copy of the zone rules. It covers the ground Time::Piece and DateTime cover between them, and a method that would change a value hands back a new one and leaves the old one as it was.

DOOM, written in Perl 5.44. The engine stays in Perl. SDL2 is only the window, the sound, and the keyboard.

"During the Perl Toolchain Summit 2026 in Vienna, we interviewed Merijn Brand, the Configure maintainer, about this indispensable piece of the Perl build setup."

by Paul Evans (PEVANS)

by Dave Mitchell

by Tony Cook (TONYC)

by Mohammad Sajid Anwar (MANWAR)

Welcome to a new week with a couple of fun tasks "Finishing Order" and "Trionic Array". If you are new to the weekly challenge then why not join us and have fun every week. For more information, please read the FAQ.

by Mohammad Sajid Anwar (MANWAR)

Enjoy a quick recap of last week's contributions by Team PWC dealing with the "Complex Number" and "Word Squares" tasks in Perl and Raku. You will find plenty of solutions to keep you busy.

by Ali Moradi

Ali shares pragmatic and comprehensive solutions in Perl for the two tasks, where complex number arithmetic and backtracking algorithms for word squares are efficiently implemented. The code is written in an organised manner by the proper use of strict pragmas and well structured modular subroutines.

by Arne Sommer

This approach to the Raku language shows how expressive it can be by using built-in Complex data type to implement calculations while simultaneously employing user-defined subset to adequately validate the unique string formats required by this challenge. In the case of the word squares task, this program uses backtrack recursive algorithm together with command line verification and clear formatting of its output.

by Jaldhar H. Vyas

Here, Jaldhar offers a dual-language simple rundown in Raku and Perl. In Raku, the Complex data type has an input normalisation and denormalisation part with respect to negative imaginary inputs, while Perl uses direct formula based parsing. In addition to that, a strong recursive depth-first search algorithm with prefix tracking is provided for solving the word squares problem in both programming languages.

by Jorg Sommrey

This article illustrates stylish and solid implementations in Perl and J for multiplying complex numbers and creating word squares. The approaches make use of Regexp::Common for parsing and Math::Complex for calculations and regular recursive backtracking algorithm. The technical description of the methods is extensive and includes quite special formatting of input.

by Luboš Kolouch

This entry presents an efficient dual language solution in Perl and Python, which comes with advanced regex parsing capability for the recognition of unusual complex number representations. In particular, the implementation of word squares is well optimised, thanks to the utilisation of a previously computed map of prefixes for smooth backtracking.

by Matthias Muth

In his blog post, Matthias presents an incredibly neat and idiomatic Perl program. His solution for Task 1 uses Perl's map /-?\d+/g function to get all the numbers directly without any hassle, while Task 2 embodies an ingenious recursive backtracking strategy that follows up both rows and column prefixes at the same time.

by Packy Anderson (PACKY)

This post will explore Challenge 395 in Raku, Perl, Python, and Elixir. It offers the reader a humorous reference to the song "A Nightingale Sang in Berkeley Square" in addition to clever parsing using regular expressions for working with complex numbers and a nice solution to the word squares problem.

by Peter Campbell Smith

In this article, an interesting exploration of how complex numbers are formatted mathematically is provided along with a smart and elegant Perl code which is used to process coefficients flexibly and multiply them.

by Roger Bell West (FIREDRAKE)

In this article, multiple languages provide an interesting perspective on how to solve the word squares problem. Roger describes how to implement a Perl string parser and construct the problem in a variety of languages, including Typst, where multiple solutions can be found by means of breadth-first search (BFS).

by Simon Green (SGREEN)

The article gives a clear and realistic description of the problem in both Python and Perl, using the built-in feature of complex numbers in Python and performing the arithmetic manually in Perl using regular expressions.

by Miguel Prz (NICEPERL)

Great CPAN modules released last week;
MetaCPAN weekly report.

October 21, 2026

November 16, 2026

November 21, 2026

November 27, 2026

November 29, 2026

April 14-16, 2027