Jo Christian Oterhals has returned with a nice blog post on How to mess up for loops in Raku, inspired by a tweet of Joelle Maslak (/r/rakulang comments). The blog post explores the ways you can call a piece of code repeatedly in the Raku Programming Language. Including ways you probably shouldn’t. Learning by bad example!

Writing a Clipboard Manager

Nguyễn Gia Phong wanted to give a presentation at the upcoming Raku Conference, but instead decided to convert their presentation to a blog post: Writing a Clipboard Manager. The reason for this conversion started a discussion about the online conferencing software to be used.

Writing devopsish tests

Alexey Melezhik has written a quick introduction into Tomty, a Raku test framework with focus on devops tasks: it allows one to write test scenarios in Bash and orchestrate them using Raku.

Flavio’s Corner

Flavio Poletti continued writing, this week in Default member values, again (/r/rakulang comments).

Weeklies

Weekly Challenge #120 is available for your perusal. And this week’s “What’s everyone working on (2021.27)” as well.

Pull Requests

• Clarify Problem Solving process description in README
• Fix memory corruption by accessing freed spesh stats
• Fix serialization gc issues
• Fix some errors WRT curried role typecheck lists

Please check these Pull Requests and leave any comments that you may have!

Core Developments

• Elizabeth Mattijsen added support for next taking a value and optimized PredictiveIterators a bit., resulting in a 1% improvement of the test-t performance canary.
• And some other smaller fixes and improvements.

Meanwhile, Jonathan Worthington continued their work on the new-disp branch, mostly solidifying the work of the past weeks.

Questions about Raku

• How do I take multiple filenames from the Raku command line? by cjm.
• Do race conditions occur while reading large data blocks? by lisprogtor.

Meanwhile on Twitter

• Testing to talk by Simon Proctor.
• About generosity and sharing by JJ Merelo.
• More intuitive by Sean Kenji Gold.
• It’s written in… by Ian Malpass.
• Published a CAT report by JJ Merelo.
• Too deep in unfinished projects by Ashwin Dixit.
• Clears lots of hurdles by JJ Merelo.
• Sugary by Sean Kenji Gold.
• Mind expansion by Mark Swayne.
• More intuitive concurrency model by Sean Kenji Gold.
• Useless and unrecommended by Jo Christian Oterhals.
• Any day now! by Bea Hughes.
• Two systems mainaining one state by Jonathan Stowe.
• Confusing by Ali.
• My personal journey by Dr. Roy Schestowitz (罗伊).
• A healthier lifestyle by Sean Kenji Gold.
• Bad twiddling? by Simon Proctor.

Meanwhile on the mailing list

• Language conversion and comparisons by Parrot Raiser.
• Windows 11 and Rakudo update by ToddAndMargo.
• Array and class question by ToddAndMargo.
• Array of strings! by ToddAndMargo.

Comments about Raku

• Can also use × for multiplication by Brad Gilbert.
• Nothing intentionally negative by kcott.
• Do maths using π by Brad Gilbert.
• Expanding our REPL by Daniel Sockwell.
• Nice programming language by aelmetwaly.
• Long story short by Ralph Mellor.

New Raku Modules

• Chemistry::Stoichiometry “Package for Stoichiometry procedures: chemical formula parsing, chemical equations balancing. Contains relevant chemical element data. Multi-language support”, Lingua::NumericWordForms “Generators, parsers, and interpreters of numeric word forms in different languages” by Anton Antonov.
• FileSystem::Helpers “Helper functions for file systems” by Ben Little.

Updated Raku Modules

• API::Discord by Kane Valentine.
• p6doc by JJ Merelo.
• Net::Ethereum by Konstantin Narkhov.
• PathTools by ugexe.
• Terminal::ANSI by Brian Duggan.
• DB::Pg by Curt Tilmes.
• Font::FreeType, PDF, PDF::Content, PDF::Font::Loader by David Warring.
• Pod::Test::Code by Fernando Correa de Oliveira.
• Gnome::Gtk3 by Marcel Timmerman.
• IO::Maildir by Neula.
• Modf by Tom Browder.
• Data::Tree, File::Directory::Bubble by stuart-little.

Winding down

On time in this real quiet week. Sport events, holidays and a general feeling of release from restrictions. Unfortunately no videos from esLibre yet. So, please check in again next week. Meanwhile, stay healthy and stay vigilant. It’s not over just yet!