Yours truly is happy to announce that Roman Baumer and Matthias Bloch have become responsible for infrastructure issues in the Perl 6 Problem Solving repository, the place where the Perl 6 community reaches decisions on matters involving Rakudo Perl 6 that are not bugs.

Perl Weekly Challenge

Blog posts in Perl 6 for the Perl Weekly Challenge #7:

• A challenge of niven numbers and word ladders by Jo Christian Oterhals (Reddit comments).
• Niven Numbers and Word Ladders by Laurent Rosenfeld (Reddit comments).
• The Niven Ladder by Arne Sommer.

Challenge #8 is up for your perusal!

Core developments

• Ticket status of the past week.
• Ben Davies fixed the inlining of CStruct and CUnion in CPPStruct REPR instances.
• Daniel Green fixed several compiler warnings in MoarVM.
• Several improvements that Ben Davies made to ThreadPoolScheduler.cue were finally merged. He also fixed some issues with the Moar runner code.
• Elizabeth Mattijsen made Iterable (<=) Hash 2x faster (for object hashes) and 3x faster (for normal hashes).
• Brian S. Julin finally saw his colon list handling improvements merged into master.
• And some other other improvements and fixes.

Questions about Perl 6

• Why is adding methods to a type different than adding a sub or an operator? by Robert Lemmen.
• Zef fails to install JSON::Fast when running in Travis with Docker by FlamingSquirrel.
• Why this duckmap is blocking? by Antonio Gamiz Delgado.
• What does serial do? by Steve Roe.
• Sorting Hash by Values and using kv by con.
• Search then replace with output of subroutine by iPherian.
• Text::CSV supported encodings by Valle Lukas.
• How to hack on installed module source? by cowbaymoo.
• What could be the reason that require doesn’t work in some places? by sid_com.
• Introspection: how do we get the name of a class within a class? by JJ Merelo.
• How to make behave a pod saved in a variable like $=pod? by sid_com.

Meanwhile on Facebook

• Downloads working again by Darren Duncan.

Meanwhile on perl6-users

Three weeks worth of messages on the perl6-user mailinglist:

• Help! Upgrade broke -M by ToddAndMargo.
• Bug: pm and pm6 get mixed up by ToddAndMargo.
• RFE: module extension defaults by ToddAndMargo.
• Why so slow by ToddAndMargo.
• Precomp? by ToddAndMargo.
• How do I fix this zef error? by ToddAndMargo.
• Something happened to the chat line by ToddAndMargo.
• What is the proper way to path a module in a non-standard directory by ToddAndMargo.
• Library search path? by ToddAndMargo.
• Short term zef fix by Simon Proctor.
• RFE: compiler bug to fix by ToddAndMargo.
• push practice: misplaced semicolon creates list elements within array? by William Michels.
• Need help with a regex by ToddAndMargo.
• Would libkvm bindings be useful to have? by Ben Davies.
• LogP6 not working as I expect by Patrick Spek.
• Which TELNET options need to be supported in Net::Telnet? by Ben Davies.
• Valid values? by ToddAndMargo.
• Rakudobug failure? by Parrot Raiser.

Meanwhile on Twitter

• A nice trend by JJ Merelo.
• Mirrors by JJ Merelo.
• Highly-defective programmers by Perl Conferences.
• Don’t forget to sign up by Jeff Goff.
• No such thing by Brad Gilbert.
• Alpha release of Cro::LDAP by Alexander Kiryuhin.
• Calling Rust straightforward by Mike Clarke.
• No faith by Trix Farrar.
• Apocryphia by JJ Merelo.
• Two Mentees by Patrick Spek.
• Selected me! by Antonio.
• Two so far by Mohammad S Anwar.
• Always something new by Mohammad S Anwar.
• Long random walk by Jamie Jennings.
• Seems fun and interesting by modula t. worm @ blfc.
• Easy by りひにー.
• Love Rust by chenyf.
• Latest jam by mempko.
• Do it in Perl 6 by 八雲アナグラ.
• When not on pain meds by Joelle Maslak.
• Haz them by Brett Gibson.
• Mixed in? by Takashi Kawasaki.
• New Dockers by JJ Merelo.
• And the new zef by JJ Merelo.
• Alive and kicking! by H.Merijn Brand.
• Perl 6, Maybe? by MaMo.
• Then a big gap by @luqui.
• Very little effort by Jo Christian Oterhals.
• Looked at Perl 6? by Claudio Ramirez.
• Beat anyone by Mohammad S Anwar.
• Why, Github? by Mohammad S Anwar.
• Growing a Perl 6 by Douglas Creager.
• Actually code by JJ Merelo.
• Baking again by JJ Merelo.
• Friends by Sean Jensen-Gray.
• More Perl 6, please? by MaMo.
• Concurrency not so much by John Z. Li.
• Human friendly programming language by MaMo.
• Your BFF by MaMo.
• Coding isn’t hard by firebreathingduck.
• Wrote about it by Jo Christian Oterhals.
• Found a bug by Jo Christian Oterhals.
• Not entirely Perl 6? by Ben Welsh.
• Rakudo Star link changed by Shoichi Kaji.
• Change to faster Docker container? by JJ Merelo.
• Natural language by Stéphane Payrard.
• ৪ is 4 by Volleo.
• Revive pugs! by Adrian Sieber.
• Fan fic needed by poly 🚡.
• Sequence once by Joelle Maslak.
• More different by via900.
• Value style very much by H.Merijn Brand.
• Inspiration for fiction by Joelle Maslak.
• Extremely difficult by hotuta.
• Image will change by みやび.
• Compare solutions by Mohammad S Anwar.
• Lazy gather by Joelle Maslak.
• 22% less by The Perl Shop.
• Grammar for Netscape cookies by Olivier Mengué.
• Did the challenge for lols by Simon Proctor.

Perl 6 in comments

• An interesting one by cletus.
• Fairly awesome by dragonwriter.
• Equivalent to ≤ by b2gills.
• Like a natural language by olah_1.
• Pretty much made for that by Patrick Spek.
• Ternary in Perl 6 by a1369209993.
• The handles trait by Moritz Lenz.
• Complete object encapsulation by Elizabeth Mattijsen.
• Lazy vs eager by Ralph Mellor.
• Marketed as a “Perl” event by Elizabeth Mattijsen.
• Nowadays? by marcosdumay.
• Productive way to learn by Ralph Mellor.
• All wrapped in grammar and parsing syntax by Ralph Mellor.

Perl 6 Modules

New modules:

• Cro::LDAP::ASN::Plugin by Alexander Kiryuhin.
• Async::Workers by Vadim Belman.
• Podviewer by Luis F. Uceta.
• FindBin::Dirs by Steven Lembark.
• Net::Telnet by Ben Davies.

Updated modules:

• Method::Also by Elizabeth Mattijsen.
• Term::Form, Term::Choose, Term::Choose::Util, Term::TablePrint by Matthäus Kiem.
• FindBin by Steven Lembark.
• GTK::V3, Pod::Render by Marcel Timmerman.
• Math::Polygons by Steve Roe.
• LibCurl by Curt Tilmes.

Winding Down

A bit of a quiet week. Pretty sure there will be more to report on next week. So please check in again!

Andrew Shitov has just published the latest newsletter about PerlCon in Riga. With updates about talks (deadline for submissions is 15 June). And about the River Cruise, which is an optional entertainment option (for max. 150 people, so get your tickets sooner rather than later!). And that cPanel has become a Gold sponsor! And much more!

Evolution of doc repository

An amazing visualization of the development of the Perl 6 documentation repository by Bart:

Squashathon

Even though last weekend’s Squashathon was not announced in the Perl 6 Weekly due to skipping a week, 12 participants nonetheless worked on the Perl 6 documentation last Saturday. And the winner is Tobias Boege: the plush Camelia is in the mail!

Perl Weekly Challenge

With two sets of blogs posts about Perl 6 solutions this week: about Challenge #5:

• Perl 6 Anagrams by Arne Sommer.
• Anagramming to the Max by Francis Whittle.
• Anagrams – in O(N) by Joelle Maslak.
• Applying permutations to an anagram challenge by Jo Christian Oterhals (Reddit comments).
• Anagrams by Laurent Rosenfeld.
• Perl Weekly Challenge – 005 by Mark Senn.
• Perl Weekly Week 5 (Part 1) and Perl Weekly Week 5 (Part 2) by Simon Proctor.

and Challenge #6:

• Compact Number Ranges and Ramanujan’s Constant by Laurent Rosenfeld.
• Perl 6 Int Erval by Arne Sommer.

Challenge #7 is up for your perusal!

Accounts package

New Perl 6 blogger Mark Carter introduces himself in a blog post about an accounts package that he created many moons ago in Perl 5, how the conversion to Perl 6 went, what features of Perl 6 he liked. Very nice to see such a nice blog post about Perl 6 out of the blue!

Wenzel on a roll

Wenzel P. P. Peppmeyer wrote 3 blog posts in the past 2 weeks:

• In “Nil is a pessimist” he describes how Nil is only half Empty, which resulted in a documentation issue about Empty.
• In “Parallel Permutations” he reacted to one of the Weekly Challenge posts in a blog post about using hyper (Reddit comments).
• In “MONKEY see no Nil” he describes his further experiences with the use of Nil.

First look at LogP6

Mikhail Khorkov has written an introduction to the LogP6 module that recently appeared in the Perl 6 ecosystem (Reddit comments).

Perl Toolchain Summit

Lovely pictures by Lee Johnson and Wendy van Dijk of the Perl Toolchain Summit. A few people where of the Perl 6 persuasion: Nick Logan reported about it (Reddit comments).

Refactoring the Universe

Carl Mäsak returned to blogging after a 17 month lull with a blog post about a large refactor in 007, the prototyping language for macro support in Perl 6.

March Report Jonathan

Matthias Bloch has published the March report of Jonathan Worthington‘s work on the Perl 6 Development Grant.

Core developments

• Ticket status of the past week, the week before that and the month of April.
• Stefan Seifert spent a lot of time making the build of Rakudo Perl 6 and its subsystems NQP and MoarVM completely reproducible, which is a prerequisite for inclusion in many stable distributions.
• Timo Paulssen made the profiler much more stable, especially in the light of unexpected exits from the program. He also did a lot of work on optimizing various data structures in MoarVM.
• Jonathan Worthington improved error detection on writing to the STDIN of a spawned process and fixed a problem with subclassing of the Parameter class.
• Christian Bartolomäus fixed some more issues on the JVM backend.
• Elizabeth Mattijsen made sure the history file in the REPL always exists.
• Patrick Böker fixed some issues with utility scripts on Windows. He also made sure that all possible command-line parameters are only shown on backends on which they are actually available. And he implemented a --full-cleanup flag that will first tear down all internal data structures in an orderly fashion, rather than just exiting to the OS when the program is done.
• And many other improvements and fixes.

Questions about Perl 6

• Overloading operators for a class by uzlxxxx.
• Text substitution on array by con.
• Read file in test folder when using prove6 by Mimosinnet.
• Creating a hash that is read-only outside of a module, but read/write inside by guifa.
• How to get the path in file of a different file of the module? by sid_com.
• “Can’t open perl script ”t/spec/fudgeall“: File or directory not found” by JJ Merelo.
• Problems using POSITIONS and Code objects by JJ Merelo.
• Loading symbols from simple files by JJ Merelo.
• Random message: Out-of-sync package detected in LANG1 by drclaw.
• Mixing-in roles in traits apparently not working by JJ Merelo.
• Creating packages through declaration of subs by JJ Merelo.
• Generic code to test if modules load by Mimosinnet.
• Is there subscript syntax to extract a diagonal from a 2D Array? by drclaw.
• How evil is MONKEY-TYPING? by oxylene.
• Can Perl 6 interface with Ada? by dusktigris.
• Unreachable command line option in MAIN by JJ Merelo.
• Post-increment and variable re-use in a single statement, Perl 5 vs Perl 6 by David Hoekman.
• Placeholder variable and topic variable by John Z. Li.

Meanwhile on Facebook

• Server died by Wendy van Dijk.
• Perl 6 on Android? by Lmg Glody Clever.
• PTS in Marlow by Wendy van Dijk.
• Feeling like… by Wendy van Dijk.
• Online again by Wendy van Dijk.
• Called… me by Jeff Goff.
• Better than last year by Jeff Goff.
• Tied by Jeff Goff.
• Miss the P6W by Jason Doege.
• Two Martins by Wendy van Dijk.
• Out in the Wild by Wendy van Dijk.
• What happened? by Fritz Zaucker.
• Updated to modern Perl 6 by Hakan Kjellerstrand.

Meanwhile on perl6-users

Sadly, nntp.perl.org was down due to maintenance work by the Perl NOC. Which made it rather hard to provide links to mailinglist messages. Yours truly will try again next week.

Meanwhile on Twitter

• Kudos to samcv by eater of cyber.
• Looking forward by Mohammad S Anwar.
• Waiting for result by JJ Merelo.
• Where is it happening? by 令和既にApple製品が2回壊れる.
• In archive by ✨ Trey Hunner @ PyCon 🐍.
• On Unicode Security by JJ Merelo.
• Serious trouble by adultsis.
• Register machine by Jewelve.
• Using Perl 6 by hoto.
• Perl 6 needs to push harder by Mohammad S Anwar.
• Got distracted by Mohammad S Anwar.
• It is awesome by Jason Doege.
• Very welcome by JJ Merelo.
• Surprisingly high by Jo Christian Oterhals.
• Backporting a bunch of Perl 6 OO constructs by The Perl Shop.
• 10 so far by Mohammad S Anwar.
• Arrows and uncertainty by apenwarr.
• Cool naming style by Mohammad S Anwar.
• Forgotten by こたつがめ.
• Crochet by DoomyfloCrochet.
• Go for Perl 6 by Suman Khanal.
• Not much code by Jo Christian Oterhals.
• Unfair by Mohammad S Anwar.
• Check out Practical Perl 6 Programming by Jeff Goff.
• Quite easy by JJ Merelo.
• Not nice to computer by Joelle Maslak.
• Good response by Mohammad S Anwar.
• Thought process behind solution by Mohammad S Anwar.
• It’s cool by Carlos Cobos.
• Does it with passion by Ale Cortés.
• Gives what it promises by Interferencias.
• Tell us by Paula.
• Second presentation by Antonio J. Caba.
• Changes considerably by kamimura.
• X-JJ by JJ Merelo.
• 222: It’s awesome by JJ Merelo.
• Designed from scratch by JJ Merelo.
• After Erlang and Elixir by オペアンプbot.
• Algorithms > Speed by Joelle Maslak.
• Cool and important by 𝙖𝙨_𝙞𝙣𝙛𝙤𝙧𝙢𝙖́𝙩𝙞𝙘𝙤 ♠️.
• Most flexible since Common Lisp by firebreathingduck.
• Educational stuff by Jo Christian Oterhals.
• GSOD funding Perl 6 documentation by The Perl Shop.
• Such as Perl 6 by Liam Proven.
• Hacked up by soapdog (mastodon: @soapdog@toot.cafe).
• First solution in minutes by .
• Still Avoid by ‘Dev’ in Creole.
• Newer version by Kruthik Dhillon.
• Perl 6, right? by Walt Mankowski.
• Important by JJ Merelo.
• Handle cp392 input? by 鼠取り猫.
• Why fix? by Javier Herrero.
• Green again by JJ Merelo.
• More Perl 6 solutions by Mohammad S Anwar.
• All Your Paradigms Are Belong To Us by Fortune Bot.
• Two lines away by clifford the big red pawg.
• Squashathon! by JJ Merelo.
• Where do you use? by Николай Говоров.
• Unstuck by JJ Merelo.
• Excitement! by Ale Cortés.
• What was I thinking? by Neil Bowers.
• Swallow and spit? by John Z. Li.
• Design and implementation different by urimaro.
• In the middle by JJ Merelo.
• Awk with grammars by Programmer.
• Sort by key extractor by Carl Mäsak.
• Multis without parameters? by brian d foy.
• Compact solution out of the box by mcturra2000.
• Why not const? by John Z. Li.
• Solution to anagrams by The Perl Shop.

Perl 6 in comments

• Better suited by claudiawerner.
• Weird switch by Ralph Mellor.
• More Fun by perlancar.
• Not talking about Perl 6? by mariuolo.
• Dynamic vs static typing by Ralph Mellor.
• Better solution by dragonwriter.
• Refinement types by Ralph Mellor.
• A breath of fresh air by olah_1.

Perl 6 Modules

New modules:

• File::Stat by 0racle.
• Git::Blame by JJ Merelo.
• JSON::Path by Tony O’Dell.
• Unicode::Security by JJ Merelo.

Updated modules:

• LogP6, Scheduler::DelayBetween by Mikhail Khorkov.
• Pod::Render, GTK::Glade, GTK::V3, BSON by Marcel Timmerman.
• HTTP::Tinyish by Shoichi Kaji.
• FindBin by Steven Lembark.
• App::Tasks by Joelle Maslak.
• Test::Script::Output by JJ Merelo.

Winding Down

Yours truly was sorry to not have the energy to do the Perl 6 Weekly last week. Sometimes the energy is just missing, especially after an intense event like the Perl Toolchain Summit. Things look to be on track again now, so please expect a new Perl 6 Weekly next week with more goodies.

This year’s Easter started with a not-so-good Friday: the main Perl 6 server hardware became unresponsive and nobody has been able to figure out what the status is of the server hardware. Unfortunately, it has turned out to be impossible to reach the people in charge of the DNS of the perl6.org domain to get the DNS changed to point to replacement servers.

In the meantime, please use https://perl6.wakelift.de as the temporary replacement for perl6.org, and https://docs.perl6.wakelift.de for docs.perl6.org.

The focus is now on getting things running again. Be assured this event will be evaluated to provide a situation that is more resilient against such an event, specifically during the upcoming Perl Toolchain Summit.

Thank you all for your patience. We hope to be able to resume normal services soon (Reddit comments).

Weekly Challenge

Again, quite a few blog posts because of the fourth Perl Weekly Challenge. These are the blog posts with Perl 6 solutions:

• A weekly challenge of Big Pi’s, Bags and modules by Jo Christian Oterhals (Reddit comments).
• Number of Pi in file – Perl weekly challenge, week 4 by Francis Whittle (Reddit comments).
• Perl Weekly Challenge: Week 4 by Laurent Rosenfeld.
• Perl Weekly Week 4 by Simon Proctor.
• Perl 6 P(i)ermutations by Arne Sommer.

Arne Sommer’s blogpost From Babylon To Pascal with Perl 6 related to last week’s challenge, spurred quite a discussion on Hacker News.

Mohammad S Anwar also would like to invote some Perl 6 gurus for reviewing the Perl Weekly Challenge entries written in Perl 6.

The Perl Conference

The organizers of this year’s American Perl Conference have published their April newsletter, inviting you to register your attendance to any of the workshops that will be given before and after the actual conference.

Problem solving repo

Aleks-Daniel Jakimenko-Aleksejev has merged the the result of the first issue in the Problem Solving Repository, which is to be used for working on all Perl 6 issues that require discussion and/or consensus. Even though this change is about the problem solving process itself, it is a good indication on how some issues that are currently classified as bugs, can be settled outside of the context of the implementation of Rakudo Perl 6.

So if you have an issue with some aspect of Rakudo Perl 6 that you could not consider a bug in the implementation, then please add an issue to the Problem Solving repo!

A Language Creators’ Conversation

Bhagyashree R also wrote a blog post about the latest PuPPy meeting in Seattle which hosted Guido van Rossum, James Gosling, Larry Wall & Anders Hejlsberg.

GSOC / GSOD

The Perl Foundation has applied for 4 slots at the Google Summer of Code. Meanwhile an application for the Google SeasonOfDocs, to improve the documentation of Perl 6, has also been done. All thanks to the tireless work of JJ Merelo!

Loops and when to use them

JJ Merelo posted a little explanation of when to use loops.

Learn grammars by commit log

Jeff Goff is exploring a new teaching method: learning by looking at a commit log. His project for creating a grammar for Picat is an example of this.

DIY Cryptography

Arne Sommer explores some ways of looking at cryptography in DIY Cryptography with Perl 6. Which is only intended as a learning resource, not as a production tool.

Scope wrapping

Wenzel P. P. Peppmeyer looks at ways of injecting behaviour into methods of core object, and the ability to switch this additional behaviour on/off in a blog post titled “Wrapping a scope” (Reddit comments).

Hosting is archaic

brian d foy responds to the decision of the grant committee to not grant the creation of an interactive Perl 6 course in a blog post titled “We don’t need no stinkin’ hosting” (/r/perl, /r/perl6 comments).

Core developments

• Ticket status of past week.
• Timo Paulssen improved the stability of MoarVM bytecode by adding many more sanity checks, inspired by the results of many fuzzing runs. He also implemented an experimental “heap dump” opcode, to be used by various introspection modules, such as Telemetry.
• Jonathan Worthington fixed an issue with self-referencing structures when doing a --target=parse. He also added a :mixin named parameter to Metamodel::Primitives.create_type.
• Ben Davies fixed an issue with JITting on OpenBSD, and issues with the NQP_HOME and PERL_HOME environment variables.
• Patrick Böker fixed an issue with building on OpenBSD.
• Christian Bartolomäus fixed another long standing issues on the JVM backend.
• Elizabeth Mattijsen added about 20K tests to the Rakudo spectest, testing all aspects of sprintf formatting.
• And quite a few smaller fixes and improvements.

Questions about Perl 6

• Using a Capture like a Slurpy by drclaw.
• zef can’t install depends by chenyf.
• Access JSON::Path numbers only key by Valle Lukas.
• How to determine the absolute path name of the compilation unit of the caller? by Håkon Hægland.
• Weight the ‘randomness’ of the pick routine? by Kane Valentine.
• Print embedded Pod as formatted text with termcap escapes by Håkon Hægland.
• Multiply all values in a %hash and return a %hash with the same structure by Kane Valentine.
• Communication between objects by hythm.
• How to interpolate a variable into a regex-pattern in the regex part of a substitution? by sid_com.
• Creating an enum from its name not value by guifa.
• Substitute: replacement evaluation by sid_com.
• Combining characters using their hexa name by JJ Merelo.
• Altering parameters in Data::Printer by con.

Meanwhile on Facebook

• I can see this by Wendy van Dijk.
• Kibitzers by Jeff Goff.
• How is this possible? by Andrew Shitov.
• Still no? by Jason Doege.
• Picat an interest by Jeff Goff.

Meanwhile on perl6-users

• Lib for non-core, non-installed modules by mimosinnet.
• Re: valid values? by mimosinnet.
• FatRats falling back to Nums by Laurent Rosenfeld.
• perl6.org down and documentation by mimosinnet.
• Why so slow? by ToddAndMargo.
• GTK widget? by ToddAndMargo.

Meanwhile on Twitter

• Nightly Docker by The Perl Shop.
• Passing tests in Chrome by The Perl Shop.
• Perl 6 Patterns by Jonathan Stowe.
• Head room by veer 💙.
• Yay! by JJ Merelo.
• Taking shortcuts by JJ Merelo.
• Thanks by Mohammad S Anwar.
• Ideal candidate for the desktop by Kane Valentine.
• CPanel Gold Sponsor by Andrew Shitov.
• Another language by Perlゼミ.
• Negative element by Perlゼミ.
• How is it different? by ポムポムプリン【ひかるん】.
• Next generation by ikubaku.
• Have come further by Perlゼミ.
• Bad brothers by Perlゼミ.
• Good to have distance by Perlゼミ.
• Readinng an intro? by Felipe Sere.
• New CSV record by H.Merijn Brand.
• Ruby now by Atsushi Kajiro.
• Gone bad by 八雲アナグラ.
• 60/40 by Mohammad S Anwar.
• Like Perl 6 by Johannes Schlüter.
• Fewer tricks by Joelle Maslak.
• Different key signing by Perl 6 Alerts.
• Less than a day by JJ Merelo.
• Congratulations, Audrey! by JJ Merelo.
• Less than 8 minutes by JJ Merelo.
• Just around the corner by [mastodon] Hyde Stevenson.
• Overhaul of regex by Chris Rasys.
• Perl 6 at JASYP by JJ Merelo.
• Camelia arrived! by Alexander Kiryuhin.
• Look at execution by 八雲アナグラ.
• At OSPN by 八雲アナグラ.
• Follow by Commit by Jeff Goff.
• Best evaluation by Liam Proven.
• Least harm by B1ff B1ff.
• Feels like Perl 6 by かっこ.
• 6 for 40 minutes by 八雲アナグラ.
• Also has gradual typing by Unix McBeard.
• FizzBuzz got me into it by Aibhstín 🇮🇪.
• Visitor pattern by Jonathan Stowe.
• Sometimes NYI by yes “YAMASHIRO, Jun”.
• None have passed by yes “YAMASHIRO, Jun.
• 32 to 27 by yukicoder最短コード更新お知らせ.
• Just by words? by %20｜1772 (+21).
• 52 to 50 by yukicoder最短コード更新お知らせ.
• 50 to 48 by yukicoder最短コード更新お知らせ.
• Get Practical by Perl Conferences.
• Please add Perl 6 by koorchik.
• Modern programming language by 八雲アナグラ.
• Start with Perl 6! by moznion.
• Have done the challenge by Simon Proctor.
• Just in time by Simon Proctor.
• Hugs for Timo by JJ Merelo.
• Thinking of Perl 6 by whitequark.
• Types of Ranges by %20｜1772 (+21).
• Jupyter kernel by The Perl Shop.
• Zero people can stop me by Danny McClanahan.
• Star in Chocolatey by brian d foy.
• Fun results by eater of cyber.

Perl 6 in comments

• Perhaps slides? by Elizabeth Mattijsen.
• Even more extreme by roblabla.
• maybe change name? by DyslexicAtheist.
• No impact by olah_1.
• Please elaborate? by Elizabeth Mattijsen.
• License for Perl&nsbp;6 by nige123.

Perl 6 Modules

New modules:

• Command Dispatch by Kane Valentine.

Updated modules:

• Log::Syslog::Native, JSON::Marshal, JSON::Class by Jonathan Stowe.
• DB::MySQL by Curt Tilmes.
• OO::Plugin by Vadim Belman.
• JSON::Path by Jonathan Worthington.
• GTK::V3, GTK::Glade by Marcel Timmerman.

Winding Down

A quiet week with a long weekend of good weather. Next week’s Perl 6 Weekly will also be published on Tuesday: this time on account of travel of yours truly back from the Perl Toolchain Summit. See you then!

New Perl 6 blogger Tyler (aearnus) describes his discovery of Junctions in Perl 6 in a blog post called: GADTs and Superpositions in Perl 6, a really unique and flexible way of looking at problems – one that’s highly inspired by the functional, data-oriented paradigm. (Hacker News comments).

Weekly Challenge

Again, quite a few blog posts because of the third Perl Weekly Challenge. These are the blog posts with Perl 6 solutions:

• Perl Weekly Week 3 by Simon Proctor (Reddit comments).
• Perl Weekly Challenge: Week 3 by Laurent Rosenfeld.
• Hamming it up in Perl 6 by Francis Whittle.
• Perl Weekly Challenge – 003 by Mark Senn.
• From Babylon to Pascal with Perl 6 by Arne Sommer.

And of note, the polyglot solution by Nick Logan, which runs in both Perl 5 and Perl 6.

Perl Toolchain Summit

Neil Bowers further reports on the plans for the coming Perl Toolchain Summit, in part brought to you by CPanel.

Perl DevRoom at Spanish FOSDEM

There will be a Perl DevRoom on 21 June at the esLibre 2019, which one could consider the “Spanish FOSDEM”. Please add your proposal for a presentation as a Pull Request to proposal repository. So far, it looks like there is a Perl 6 Tutorial on the menu already!

Nightly Docker images

Patrick Spek describes how his scripts are creating a Perl 6 Docker image every night on the various Linux flavours, and how that compares to the work that Tony O’Dell has done.

Lucky Arch Linux users

It appears that the Comma IDE Community Edition is now available to Arch Linux users if they activated the Arch User Repository in their package manager. And it appears to work like a charm.

Grant Voting Results

The Perl Foundation Grant Committee decided against the only proposal of this round: A Complete (Interactive) Perl 6 Course with Exercises by Andrew Shitov. This is sad news, but maybe not the last we’ve heard of this (Facebook comments).

Picat spacing out

Jeff Goff describes his work on creating a grammar for the Picat language. Which exposed a whitespace gotcha in grammars. (Facebook, Reddit comments).

A Language Creators’ Conversation

The PuPPy event at which Guido van Rossum, James Gosling, Larry Wall & Anders Hejlsberg sat together, has been neatly summarised in a blog post by David Cassel. Which is extra nice since the audio of the video is very bad.

Graphing DB schema

Edouard Klein got into programming in Perl 6 with a very nice command line script that turns CREATE TABLE statements into a graph (Reddit comments).

OWASP Perl 6 Wiki?

Charlie Gonzalez noticed that Perl 5 and Perl 6 frameworks are not very well represented on the Open Web Application Security Project. Volunteers are invited to take the necessary actions to remedy the situation.

Toggle Grayscale

Ricky Morse got inspired by a Python article about toggling the MacOS screen between black-and-white and colour. His Perl 6 solution with NativeCall is remarkably simple.

Core developments

• Ticket status of past week.
• Jonathan Worthington improved the inlining of native variables that were defined outside of the scope they were used in, which made some code about 4x as fast. He also removed unnecessary code generated for initializing native variables. This work made the spectest about 4% faster.
• Christian Bartolomäus fixed some semi-long standing issues on the JVM backend.
• Elizabeth Mattijsen fixed an issue that was preventing reproducible builds for packaging Rakudo Perl 6. She also introduced a warning to be shown when a MAIN powered command-line script is possibly unexpectedly waiting for input from the keyboard.
• And some smaller fixes and improvements.

Questions about Perl 6

• defined-or “//” over multiple lines by Valle Lukas.
• Errors using Metamodel::ConcreteRoleHOW.new_type by JJ Merelo.
• Reading file line by line, how to do idiomatically? by con.
• What is the difference between -I. and -Ilib? by Nick Logan.
• Errors with role “currying” by JJ Merelo.
• How does Perl 6 decide which version of a module gets loaded? by Nick Logan.
• How to check if a file is a text file? by sid_com.
• Implicitly lazy gather/take not considered a “lazy” object by JJ Merelo.

Meanwhile on Facebook

• CLDR to Perl 6 by Matthew Stephen Stuckwisch.
• Instagram accounts by Andrew Shitov.

Meanwhile on perl6-users

• Naming a module that deals with the meta-object protocol by Ben Davies.
• push() practice: misplaced semicolon creates list elements within array? by William Michels.

Meanwhile on Twitter

• Faster and faster by Alexander Kiryuhin.
• Type smiley? by cλementd.
• Not just just by JJ Merelo.
• Top day on SO by JJ Merelo.
• Killer code by Brad Gilbert.
• Far more than one by MaMo.
• Honoured by Mohammad S Anwar.
• More meaty by Simon Proctor.
• Gather take tutorial by The Perl Shop.
• Not print but say by たかのあきこ@freeCodeCamp攻略中.
• Created by a linguist by konobi.
• Parrotting by B Lzrk.
• Infinite adoption by Kristian Köhntopp.
• Take on 3 by Simon Proctor.
• fizzbuzz by type by りゅう.
• Practical Perl 6 course by Jeff Goff.
• 123reg supporting European PerlCon by Andrew Shitov.
• Numeric literal by nil2.
• ~~ instead of =~ by Regular Expression.
• Shout out by TristanBomb.
• Still avoiding? by J.
• Everything everyone wanted and more by gyermolenko.
• Update relevant Perl 6 info by Kane Valentine.
• Visitor pattern by Jonathan Stowe.
• Go bold! by mempko.
• Valid string by Crème brûlée #29.
• Wiki on types by cλementd.
• Stackoverflow bounty by JJ Merelo.
• Insufferable++ by Martin Hořeňovský.
• Not so common by 次郎@転職活動中 ☁️[17:12:45].
• Possibly a series by Jeff Goff.
• Influential by Brad Gilbert.
• Documentation is essential by JJ Merelo.
• Easier in Perl 6 by Joelle Maslak.
• Used Haskell by veer.
• First solution by Mohammad S Anwar.
• Be careful by やまねこ ⚙楢ノ木技研.
• Aren’t you friends? by のりたん.
• Into functional programming and esoteric tech by The Perl Shop.

Perl 6 in comments

• Program anything by earenndil.
• Then post again by Ralph Mellor.
• POD extensions by Ultimatt.
• What a user thinks of as a character by Ralph Mellor.
• Fiascos by korethr.
• Perl 6 variant by Elizabeth Mattijsen.
• Take your time by b2gills.
• Handled in signatures by b2gills.
• Maybe golfed by b2gills.
• Removing array duplicates by Wenzel P. P. Peppmeyer.
• Comes with a REPL by simula67.
• Multi-paradignm languages? by Ralph Mellor.
• Thanks to Perl 6 by saxondown.
• Ties everything together by CrazyM4n.

Perl 6 Modules

New modules:

• vCard::Parser by Petr Kolář.
• HTTP::API::Pingdom by Patrick Spek.
• Pygments by Matias Linares.

Updated modules:

• License::SPDX, Log::Syslog::Native by Jonathan Stowe.
• LogP6, LogP6-Writer-Journald by Mikhail Khorkov.
• URL by Patrick Spek.
• AttrX::Mooish by Vadim Belman.
• Pod::Load by JJ Merelo.
• Random::Choice by Itsuki Toyota.

Winding Down

A week with some nice new speed improvements. And again a nice crop of blog posts. Feels like spring! See you next week for more uplifting Perl 6 news!

The Perl Weekly Challenge has generated quite a few submissions and associated blog posts (and of course the repository with submitted solutions). There’s now also a recap of the first challenge by Mohammad S Anwar. Keeping track of all the blog posts has become quite a job. Hopefully yours truly didn’t miss any in this overview:

• Perl Weekly Challenge #1: translate letters and count. by JJ Merelo.
• Perl Weekly Challenge, First Week by Laurent Rosenfeld.
• Perl 6 small stuff #16: All your base are belong to us by Jo Christian Oterhals (Twitter comments).
• Perl Weekly Challenge, Week 2 by Laurent Rosenfeld.
• Perl 6 from Zero to 35 by Arne Sommer.
• Too late to submit by ogniloud.

Check out the guide for submissions if you’re thinking about adding your own Perl 6 solutions.

A Language Creators’ Conversation

Guido van Rossum, James Gosling, Larry Wall & Anders Hejlsberg sat together at the latest PuPPy meeting in Seattle and discussed language creation. Sadly, the audio of the video is very bad. Regardless of that, it spurred quite a discussion on Hacker News. Good to see Larry up and about!

Looking for Grant Committee Members

The TPF Grant Committee is looking for new members. Being a member involves needing to read any official grant proposals (which you might be reading already anyway), and submitting a vote once every 2 months or so, possibly after some mailing list discussion. (Facebook comments).

YACM

Or, welcome Patrick Böker, our latest Yet Another Core Member on the Rakudo Perl 6 project. Patrick was recently involved in making the build of Rakudo Perl 6 completely relocatable, which is very much welcomed by various packagers of Rakudo Perl 6. Looking forward to see much more of this good work!

Aearnus looking at Perl 6

A student at the University of Arizona for mathematics and theatre has written two blog posts about Perl 6 in the past week, which both created quite a stir.

The first one titled “A Whirlwind Tour of Perl 6’s Best Features” starts with:

It’s rare that I find a language that I truly feel innovates upon established conventions and features.

(Reddit comments). This blog post also started a large discussion on /r/programming titled Maybe it’s finally time to give Perl 6 a shot.

The second blog post was titled “Perl 6 is the World’s Worst ML (with addendum by Damian Conway)” (ML on Wikipedia), with quite a few comments on /r/perl6 and Hacker News.

Nice to see two such positive blog posts coming from an unexpected source!

Javascript backend update

Paweł Murias reports on the progress of the work on the Javascript backend of Rakudo Perl 6. Precompilation is still an issue. And a bug found in Chrome. And future plans! Kudos again to Paweł Murias for all this hard work. So good to see it coming to fruition!

Practical Perl 6 Regexes

Brian Duggan has published the slides of his presentation about Practical Perl 6 Regexes given at the DC Baltimore Perl Workshop last weekend.

Perl 6 not so full of art

A blog post showing that 93% of Paint Splatters are Valid Perl Programs completely disregarded the fact that with use strict (which has been recommended to be used always for at least past 25 years) this number would be closer to zero. Ah well, some people get stuck in the “then they laugh at you” phase (Hacker News comments with some Perl 6 references).

Swiss Perl Workshop CFP

About a week after the European Perl Conference, there will be the Swiss Perl Workshop 2019 in Olten on 16 and 17 August. The Call for Papers has been opened. Please submit your Perl 6 presentations for what looks it’s going to be another nice and cosy Swiss Perl Workshop!

Core developments

• Ticket status of past week.
• Jonathan Worthington fixed various memory leaks that occurred with certain types of long running programs and certain combinations of asynchronous and parallelizing features. He also made the inline limit settable per language, allowing for a smaller limit for NQP. This appears to make building and testing of Rakudo Perl 6 about 5% faster.
• Patrick Böker fixed a build issue on Windows. And he also made sure that Rakudo will build and install on operating systems that do not have a bash installed by default.
• Tom Browder improved the README.md to include notes about testing.
• Ben Davies fixed handling of some edge-cases of parameters to ThreadPoolScheduler.cue.
• Wenjie Sun fixed a problem with deprecation message of the handling of the RAKUDO_EXCEPTIONS_HANDLER environment variable.
• And some smaller fixes and improvements.

Questions about Perl 6

• Default definition of white space method ws in a grammar by Håkon Hægland.
• ACCEPTS vs smartmatch in Hashes: what’s the difference? by JJ Merelo.
• Are our variables dynamic? by drclaw.
• Where is contains(Junction) defined? by JJ Merelo.
• How to pass hash-like object which does associative role to a constructor expecting a hash? by Håkon Hægland.
• Avoid creating temporary scalars when returning multiple arrays by Håkon Hægland.
• Matching non-whitespace characters by Ben Davies.
• What happens when a declarator (my/state) is in a loop block? by drclaw.
• A difference between UTF-8 and Texas operators by Fernando Santagata.
• How to use Grammar::Tracer with a unit scoped grammar? by Håkon Hægland.
• Does ratcheting affect nesting structures and “frugal quantifiers”? by Fernando Santagata.

Meanwhile on Facebook

• Happy Todd by Wendy van Dijk.

Meanwhile on perl6-users

• MacOS Mojave 10.14.4, Rakudo Star 2019.03.1, zef install Ddt ->Failed to change the working directory… by David Christensen.

Meanwhile on Twitter

• ORM Answer by The Perl Shop.
• Rakudo Star Released by Евгения Домерникова.
• Try to get my head around it by Mohammad S Anwar.
• Cool bleeding edge by The Perl Shop.
• Need a few 20 min talks by Andrew Shitov.
• … 6 by Martin A. Brooks.
• PHP Parser by PHP OSS.
• A little understanding by 花月かすみΛ__Λ.
• A nice review by JJ Merelo.
• Jokingly, more difficult by Николай Говоров.
• Last minute save by PuPPy.
• Best balance? by Larry Hastings.
• What prevents evolving? by Loooorena Mesa @ The Cosmos 💫 💫.
• 1400+ pages of Perl 6 Documentation by JJ Merelo.
• So many neat things by Brendan Zabarauskas.
• Let’s fully understand by watiko.
• Shipped, with types by theory b respecter.
• Complete rewrite of regex syntax by firebreathingduck.
• Looked at Inline::Go? by Brad Gilbert.
• Different & amazing by BrendanEich.
• Still stays Perl by Aleksa.
• Added support for 5 languages by Alexey Melezhik.
• It works by こばやし ‘にらたま’ けんいち.
• Looks like Perl by Chason Chaffin.
• Quine by Ilmari.
• Not a timely version by Perlゼミ.
• Did you know? by masasuzu.
• Extensible grammar by Olivier Mengué.
• I remember by a dog with bad opinions.
• Don’t discount Perl 6 by Mick Watson.
• Paint splatters by jeeger.
• Sorry for what’s coming by a dog with bad opinions.
• Surprising results by JJ Merelo.
• A great intro by mempko.
• But the best by Moritz Lenz.
• Bad default? by Joelle Maslak.
• Love multi-dispatch MAIN by Joelle Maslak.
• Not the answer by Jeremy Kahn.
• Grammar Answer by Mohammad S Anwar.
• Dramatic pause by Interferencias.
• Best features by Michael Kohl.
• Doesn’t meet by %20｜1751 (-70).
• Not a big difference by JJ Merelo.
• Reminded by JUAGλ.
• Not necessary by via900.
• 8 Bytes by Anagolfer.
• Challenging task by Mohammad S Anwar.
• Stay for Perl 6 by Simon Proctor.
• Hating Perl 6 by Karl D. Asmussen.
• An opportunity by Herbert Breunung.
• Please check status of PerlCon talks by Andrew Shitov.
• Exercism by たかのあきこ@freeCodeCamp攻略中.
• Size matters by Perl Conferences.
• From Perl 5? by たかのあきこ@freeCodeCamp攻略中.
• Interested in Perl 6 by Antonio.
• Or two. Or three by JJ Merelo.
• Thinking about using Perl 6 by 八雲アナグラ.
• Solution Distribution by Mohammad S Anwar.

Perl 6 in comments

• Definitely not Perl 6 by algoritm420.
• Decline before the debacle by simias.
• Some points of note by b2gills.
• Reactive programming in Javascript, inspired by Supply by marcoonroad.
• Not always a reference implementation by pushpop.
• Not its cause by cygx.
• Endorsing string types? by tyingq.

Perl 6 Modules

New modules:

• Algorithm::HierarchicalPAM by Itsuki Toyota.
• Acme::Polyglot::Levenshtein::Damerau by Nick Logan.
• Intl::CLDR by Matthew ‘Matéu’ Stephen Stuckwisch.
• Text::LDIF by Sylwester Lunski.

Updated modules:

• Acme::Cow by Elizabeth Mattijsen.
• Term::Choose, Term::Form, Term::TablePrint, Term::Choose::Util by Matthäus Kiem.
• FindBin by Steven Lembark.
• NativeHelpers::Callback, LibUUID by Curt Tilmes.
• Archive::Libarchive::Raw by Fernando Santagata.
• LogP6 by Mikhail Khorkov.

Winding Down

An exciting week with many submissions, blog posts and quite a few positive comments and support from unexpected corners of the interwebs. Tis looking a lot like spring! Please check in again next week for more news about Perl 6!

(this space intentionally left blank)

Rakudo Star Release 2019.03

Naoum Hankache has announced the release of Rakudo Star 2019.03, the first Rakudo Star release to feature support for Perl 6.d. Thanks to Naoum Hankache and his team in getting this brave new release out of the door. And kudos to Steve Mynott for having done a Rakudo Star release so many times before!

Perl Weekly Challenge Fallout

The first Perl Weekly Challenge generated quite some blog posts and tweets. Here’s a selection that (also) mention Perl 6 solutions:

• Long story about short answers to Perl Weekly Challenge no. 1 by Jo Christian Oterhals (Reddit comments).
• Perl Weekly Challenge Further thoughts by Simon Proctor (Reddit comments).

A second challenge has been published already! More Perl 6 solutions will be very welcome!

Zef plugins

Tony O’Dell introduces his work on creating zef plugins with an example of implementing a config parameter for zef for configuration management. This looks like some good ideas of git plugins have been assimilated!

I like Rakudo 100x

Wenzel P. P. Peppmeyer found a strange regression in Perl 6 and blogged about it. Which resulted in a Travis-CI test that should turn green whenever the bug gets fixed.

Staying composed

Paul Cochrane was frustrated about not being able to enter π on his keyboard, researched it and blogged about it extensively (Reddit comments).

Conditional whenever

Wenzel P. P. Peppmeyer actually wrote a second blogpost this week, this time about filtering the output of iostat, which uses a Supply that does nothing. I guess that is similar to Empty.

Space case

An interesting discussion about an addition to the group of CamelCase, snake_case and kebab-case: the space case, which looks like allowing space characters as part of identifiers. Shudder.

Perl 6 gather, I take

Arne Sommer has written a blog about gather and take, in which he shows several approaches to scrolling lines of text on a screen with a given delay. All part of preparations for his class at PerlCon 2019 (Reddit comments). .

No more Perl 6 Weekly

Yours truly explains why she won’t post the Perl 6 Weekly to the /r/perl Reddit anymore (Facebook comments).

Core developments

• Ticket status of past week and the month of March.
• Nick Logan JITted some more opcodes.
• Timo Paulssen continued his work on the profiler.
• Paweł Murias fixed several issues on the Javascript backend.
• Elizabeth Mattijsen fixed an issue with named command line parameters and using a @ sigil in a MAIN signature.
• Tom Browder fixed a problem with named parameters in pod config.
• Patrick Böker fixed several build issues on various operating systems.
• Christian Bartolomäus continued his work on unbitrotting the JVM backend.
• And some other smaller tweaks and fixes.

Questions about Perl 6

• When I run a program a lib directory appears in the current working directory – how do I prevent this? by user2145475.
• Huge memory usage with circular pipeline by drclaw.
• Blob.decode with replacement does not seem to work by JJ Merelo.
• Module dependencies: is it possible to set a mininum version? by sid_com.
• Is there a way to get the version from META6.json in module code? by Nick Logan.
• Strict type checking in binding to routine arguments by JJ Merelo.
• How to improve source code install performance? by Alexey Melezhik.
• How to avoid importing default symbols when using a module? by Håkon Hægland.
• How do I decompress a Git object properly? by uzlxxxx.
• Filter out lines with unmatched grammar? by LiberatedAlpaca.

Meanwhile on Facebook

• PuPPy Annual Benefit by Wendy van Dijk.
• Late bird prices for PerlCon by Wendy van Dijk.

Meanwhile on perl6-users

• MoarVM panic when using PKafka by Konrad Bucheli.

Meanwhile on Twitter

• Evil FizzBuzz by Πτολέμαρχος.
• Happy with my decision by Mohammad S Anwar.
• A Poetic Perl 6 solution by Mohammad S Anwar.
• Scratching their itches by JJ Merelo.
• Excellent choice by JJ Merelo.
• Rewriting as I learned by Khaled 🐫, 🐧& 🦋.
• Compile to JSX by chee.
• Ranking the champions by Mohammad S Anwar.
• Now I can! by Paul Cochrane.
• Proud about a core developer by OpusVL.
• Perl alive in Perl 6, so what? by _ko1.
• What is it like? by きしもと.
• Different languages by Ryusei.
• Getting into Perl 6 by JJ Merelo.
• Daily Perl 6 Docker containers by Patrick Spek.
• New evolution by JJ Merelo.
• Bone hurtin’ juice by aあ~nにjゃa 🐱 🍳 🦇 👽.
• Powerful. Seductive. by openloop.
• A special case by pacman (///).
• Brian Duggan will cover the basics by DC-Balt PerlWorkshop.
• Lonestar by Shell OSS.
• Check out the GSOC projects by JJ Merelo.
• Audio from Chemnitzer Linux Tage by Herbert Breunung.
• Fewer Perl 6 solutions by Mohammad S Anwar.
• Not something the tool can do by Timo Paulssen.
• Doing array operations like MatLab/Octave by Tris-tan.
• Glimpse of Learning Perl 6 by 柴犬圖靈機.ino.
• When I’m awake by Simon Proctor.
• Amazing by Onkunde #26.
• Rather long explanations by Jo Christian Oterhals.
• A Cool type by はりー.
• You need parantheses by Jonathan Cast.
• What Parrot failed to be by Olivier Mengué.
• Inspired by Perl 6 by Marco Aurélio → One must imagine Sisyphus happy….
• Stubborn by Caroline Parins-Fukuchi.
• Now including leading ones by JJ Merelo.
• Solutions in Perl 6 first by Joelle Maslak.
• Basics for IPv6 support now by Joelle Maslak.
• New basic type by Joelle Maslak.
• I want to contribute to GSOC by Jasveen Singh S..
• Want atomics? by Arne Mertz 🌍.
• A beautiful implementation by Joelle Maslak.
• Rakudo Star 2018.03 by Opennet.ru News.
• Keep them coming by .
• A toddler’s challenge by Mohammad S Anwar.
• Looking for answer with grammar by Mohammad S Anwar.
• The only girl by Joelle Maslak.
• Good to see veterans by Mohammad S Anwar.
• Learned so much by Mohammad S Anwar.

Perl 6 in comments

• Usually Perl 6 by kbenson.
• Guido’s rudeness by Ralph Mellor.
• → Parrot/NQP/whatever by yellowapple.
• Not the same mistake by wbl.
• Not sure if it makes sense by Ralph Mellor.
• Too dissimilar by primo-ppcg.

Perl 6 Modules

New modules:

• P6TK by alan.invents.
• Acme::Cow by Elizabeth Mattijsen.

Updated modules:

• Grammar::PrettyErrors by Brian Duggan.
• Term::Choose, Term::Choose::Util, Term::TablePrint by Matthäus Kiem.
• Algorithm::Evolutionary::Simple by JJ Merelo.
• Cro::OpenAPI::RoutesFromDefinition by Jonathan Worthington.
• Cofra by Sterling Hanenkamp.
• Auth::SCRAM by Marcel Timmerman.
• Archive::SimpleZip by Paul Marquess.

Winding Down

The original main article of this Perl 6 Weekly was an April Fool’s prank that involved both Perl 5 and Perl 6. It seems however, that yours truly would be the last person that should be allowed to do such a prank. It’s all serious business. Unjokingly, eviction from the community was suggested. Hopefully see you next week for less serious Perl 6 news. 🙂

Tom Browder has proudly shown off his brand new Perl 6 vehicle tag. I guess the camel got modernized with a 6-speed automatic and air-conditioning 🙂

Welcome, Kane Valentine

Kane Valentine (also known as kawaii) has become the latest Perl 6 core developer. Looking forward to see more of his work on the Perl 6 core. As a really good start, Kane has committed to doing the next Rakudo Compiler Release!

Request for Members

The Perl Foundation Grant Committee, the people who vote on whether a grant proposal to the Perl Foundation is accepted or not, are looking for new members. Voting members review proposals every two months, including community feedback, and vote on whether to approve/fund the grant. Please leave a comment, or even better make your intent to be a Grant Committee member clear to Grant Committee chairman Will “Coke” Coleda.

Perl Conference 2019 Newsletter

The organizers of the Perl Conferences in Pittsburgh, PA (16-21 June) have published their March Newsletter, with requests to YAPC “regulars” and volunteers alike! And the fact that the early bird pricing will be available until the 15th of May! And a Golden Ticket option! Check it out!

Perl Weekly Challenge

The first Perl Weekly Challenge has been published. Check out Mohammad S Anwar‘s Perl Weekly FAQ for more information. Provided are a challenge for Beginners, and a challenge for Experts. Solutions can be given in either Perl 5 or Perl 6. Let the games begin!

London Perl Workshop Videos

The videos of the London Perl Workshop 2018 have been uploaded. The Perl 6 ones are:

• Web App Testing by Simon Proctor.
• Delay or Delegate by Elizabeth Mattijsen.

Too bad only the presentations in the main room were recorded, so these Perl 6 related presentations:

• Publish or perish with Perl 6: adventures of an academician in the Perl 6 developers world‎ by JJ Merelo.
• 24 uses for Perl 6‎ by Simon Proctor.
• Creating a Perl 6 grammar for reading an emacs .org file‎ by Moray Jones.
• Perl 11 & The Reunification of Perl 5 + 6‎ by Will Braswell.

were sadly not recorded.

Nightly Docker builds

Tony O’Dell has set up a nightly Perl 6 build on DockerHub. A quick and cool way to be able to test your stuff on the bleeding edge of Perl 6 development!

Reverse Linear Scan Allocation

Bart Wiegmans reports on the feedback that he got on his previous blog post in a new blog post. Food for compiler builder lovers! (/r/ProgrammingLanguages, /r/Compilers comments).

Heap Snapshots

Timo Paulssen reports on his progress of the heap snapshot profiler and how a new storage format reduced the size of a series of snapshots from 1.1 Gbyte to less than 100 Mbyte. Which implies you can save snapshots for a longer period before the size of the snapshots becomes really unwieldy! Can’t wait for the next update!

What’s in an ORM

Tony O’Dell also blogged about his ORM named DB::Xoos. He shows the key features of DB::Xoos, such as flexible configuration, relational modeling made easy, convenience methods and validation. Recommended reading for people who like Perl 5’s DBIx::Class.

Colonoscopy

Arne Sommer is on a roll. In the third article of his recently started blog, he describes all the different ways the colon can be used in Perl 6 (Reddit comments).

Rakudo Star RC2 available

Some issues were found with the first Rakudo Star 2019.03 candidate, so there is now a second 2019.03 Rakudo Star candidate. Please download and check it out on as many systems you can, and report any issues you may find. Thank you!

Missing math/statistics functions

Aleks-Daniel Jakimenko-Aleksejev started an issue about missing math / statistics functions, such as clip (or clamp), mean, median. Comments welcome!

Core Developments

• Ticket status of past week.
• The hard work of Patrick Böker of the past months to make the installation of Rakudo Perl 6 relocatable (in MoarVM, NQP and Rakudo) has been merged.
• Nick Logan provided many more JIT templates Pull requests, so far only two (for nqp::clone, and nqp::cpucores on the Javascript backend) have been merged.
• Timo Paulssen continued working on the heap snapshot analyzer.
• Elizabeth Mattijsen implemented tests to scan for unintended leakage of identifiers into the CORE::, SETTING:: and PROCESS:: namespaces. And she also fixed a potential segfault when iterating over SetHash, BagHash and MixHash objects (and deleting objects on the fly). And made sure the USAGE message of a script is more sane when trying to show only those candidates that already partially match.
• Vadim Belman fixed a pesky error in which multi-dispatch was selecting the wrong proto when run inside a BEGIN block. And provide better error messages when trying to execute operators with Real type objects, similar to Date.
• And some smaller tweaks and fixes.

Questions about Perl 6

• Is it possible to create new lexical symbols in other contexts at runtime? by Ben Davies.
• Is there a clamp method/sub for ranges/Num by drclaw.
• Why don’t all the shell processes in my promises (start blocks) run? by Christopher Bottoms.
• Parameterized subsets by JJ Merelo.
• Why the performance difference in += vs +? by drclaw.
• Cannot invoke this object (REPR: P6opaque; Parallel::ForkManager) by con.
• (Identifier) terms vs. constants vs. null signature routines by JJ Merelo.
• How to insert an array into an array of arrays? by sid_com.
• Where to get agreement by Daniel Maldonado.
• How to EVAL a string given by user to be a function? by lisprogtor.
• Function floor works differently with numbers and strings? by lisprogtor.

Meanwhile on Facebook

• A long way to go by Norman Gaywood.
• Got Perl6::Parser::Pure to work by Jeff Goff.
• Throw it on Github by Jeff Goff.
• Basic refresher? by Jeff Goff.

Meanwhile on perl6-users

• A FatRat.base issue by Aaron Sherman.
• Hash copy by Marcel Timmerman.

Meanwhile on Twitter

• Gibberish by The Perl Shop.
• Released years ago! by Alexander Kiryuhin.
• Numbers increase slightly by こたつがめ.
• Incredibly clever by ridcardo_filipo.
• Sing at OSC by 八雲アナグラ.
• Perl 5 one week, Perl 6 the next by Perl Weekly Challenge.
• Like this: .= new() by Mohammad S Anwar.
• Wanting to learn Maths again by Mohammad S Anwar.
• Pre-release of API::Perspective by Kane Valentine.
• Not one of the choices by Barry Carter.
• The answer by Andrew Shitov.
• Clamped by Meme Overflow.
• Still relevant after ten years? by Max Treskin.
• New Test::Script::Output by JJ Merelo.
• Tiny JSON parser by Francisco Ferreyra .
• Found a way to organize things by Jeff Goff.
• Joined, fun! by Alexey Melezhik.
• Healthy competition by Perl Weekly Challenge.
• Best not to ask by York Modular.
• Is that Perl 6? by Mohammad S Anwar.
• Using þ as a standin by Jeff Goff.
• River Cruise! by Andrew Shitov.
• New sponsor: Validad by Andrew Shitov.
• Messing with Perl 6 grammars? by Gizmo Mathboy.
• Let’s go with a huge ecosystem of crap modules by masukomi.
• Studying recently by こたつがめ.
• Corner cases by JJ Merelo.
• Depends by Steve Mynott.
• Pretty Errors by JJ Merelo.
• Just use Lisp by Slava Zakovyrya.
• 60/40 by Mohammad S Anwar.
• Balance out! by Perl Weekly Challenge.
• Ambiguous dispatch conflict exception by Marco Aurélio → One must imagine Sisyphus happy….
• A lot of attention by Ryoma Sin’ya.
• Weird partial migration by Victor Stinner.
• Haskell QuasiQuoter by ArchLinuxUpdateInfo.
• First Perl 6 solution by Perl Weekly Challenge.
• Not even lunchtime yet by Perl Weekly Challenge.

Perl 6 in comments

• How amazing Perl 6 is by claudiawerner.
• Doomed to extinction by aimalnewkirk.
• Easier to write an inline by Ralph Mellor.
• Similarly extreme language by Ralph Mellor.
• Creating a compiler by pmz.

Perl 6 Modules

Cool to see the number of new modules exceeds the number of updates! New modules:

• API::Perspective by Kane Valentine.
• Text::CSV::LibCSV by Tony O’Dell.
• XML::Entity::HTML by Timothy Totten.
• Intl::Fluent by Matthew Stephen Stuckwisch.
• Grammar::PrettyErrors by Brian Duggan.

Updated modules:

• Font::FreeType by David Warring.
• XML::XPath by Martin Barth.
• DB::Xoos by Tony O’Dell.
• Pod::Load by JJ Merelo.

Winding Down

So many cool things this week: relocatability (seen by many as a prerequisite for proper packaging), nightly Docker builds, a new core developer and releaser and more new modules than updated ones. Yours truly likes to see that very much! More about that next week!

Andrew Shitov would like to know how you like his grant proposal for creating a complete course with exercises covering all aspects of Perl 6, aimed at everyone who is familiar with programming. A course that can be used in self-studying or as a platform for a class. Be sure to leave your comments! (Endorsement on Twitter).

February Grant Report

Jonathan Worthington reports on his progress in the month of February: about escape analysis, scalar replacement and more aggressive optimizations of inlined code.

Linter for YAML files

Alexey Melezhik introduces a new Sparrow6 plugin that checks the validity of YAML files. Good to be aware of if you’re editing YAML files on a regular basis.

Gibberish

Arne Sommer has written a blog post about why and how to create gibberish using Perl 6. All to be part of the 2 day course “Beginning Perl 6” he’ll be giving at the European PerlCon in Riga in August. (Reddit, Twitter comments).

Aλhambra Day

An event about functional programming in Granada on the 6th of April, will see a presentation about functional programming in Perl 6 by none other than Elena Merelo! (En Español)

Videos from TechMeet

Two Perl 6 videos from the last London.pm Technical Meeting:

• Operators and Metaoperators by Simon Proctor.
• Red ORM by Fernando Corrêa de Oliveira.

Impressions from GPW 2019

Martin Becker shared his impressions about the German Perl Workshop in Munich. With some good and some not so good about Perl 6. And the Worst Pie Chart Ever!

European PerlCon news

Two more sponsors: perlmaven.com and The Perl Shop. Also, time is running out on Early Bird pricing of tickets. And don’t forget to check out the brilliant PerlCon Teaser for Jonathan Worthington‘s workshop!.

Twin Projects

Mohammad S Anwar describes how two projects kept him busy in the past week: one of them being another London Hack Day, and the other about a Weekly Perl (5 or 6) challenge.

Why operators are useful

Guido van Rossum has written a blog post on why operators are useful, and whether or not adding an operator for merging two hashes is a sensible thing to do. It also mentions Perl, presumably Perl 6. (Twitter, Reddit comments).

Types are moving to the right

Roman Elizarov takes a look at a lot of older and newer programming languages and comes to the conclusion that modern languages specify their types to the right of the variable. (Twitter, Reddit comments).

Something about IR optimization

Bart Wiegmans has blogged about his progress on optimizing the intermediate representation of code. Very graphic, hard core stuff!

Core Developments

• Ticket status of past week, with an extreme number of updated tickets thanks to Lucas Buchala labelling 250+ previously unlabelled issues.
• Aleks-Daniel Jakimenko-Aleksejev released a 2019.03.1 release of the Rakudo Compiler, to fix an issue that was found on Windows while testing the Rakudo Star 2019.03 Release Candidate.
• Jonathan Worthington merged all of his optimization work of the past month or so.
• Nick Logan‘s work on creating an nqp::uname, that removes the need to shell out to uname, was merged.
• Paweł Murias fixed various issues on the Javascript backend in nqp.
• Audiatorix provided the incentive to create better error messages when map gets fed something other than a Callable.
• Sergio Ortiz Rojas suggested making Failure.new on an instantiated Failure object to throw, rather than silently create a new Failure object.
• And some other fixes and improvements.

Questions about Perl 6

• Mistyped method call with colon syntax. No error. But what does it mean? by drclaw.
• Useless use of - in expression -1 in sink context by Antonio Gamiz Delgado.
• Behaviour of feed operator pipeline by drclaw.
• Peculiar error using :s adverb by Jo Christian Oterhals.
• How to handle special characters from file? by Frenzowski.
• Test module isa-ok with Buf by Curt Tilmes.
• Nativecall Buf lifetime and Garbage Collector by Curt Tilmes.
• Sigilless variables, constants, bindings: when to choose what by pistacchio.
• Useless use of hash composer, or cannot modify an immutable hash? by JJ Merelo.
• How to tell the difference between types of nqp iterators by Elizabeth Mattijsen.

Meanwhile on Facebook

• Meet in Strasbourg? by Wendy van Dijk.
• The day of π by Andrew Shitov.
• Shooting a cool promo by Wendy van Dijk.
• Perl 6 ordered by Wendy van Dijk.
• Time to update the cover by Andrew Shitov (Last update).
• Other languages have a long way to go by Norman Gaywood.

Meanwhile on perl6-users

• I need help with lines by Todd Chester.
• print to a printer by Todd Chester.

Meanwhile on Twitter

• Kept or broken by chee.
• Expecting to booth by Andrew Shitov.
• One more by JJ Merelo.
• Tutorial video by The Perl Shop.
• Documentation, you know by JJ Merelo.
• Discord & IRC by Simon Proctor.
• FortiOS update by K.Namba/ご注文は910ですか？.
• Shrunk after porting by こたつがめ.
• Not Perl 6? by gǔ yuè.
• Delayed after signal malfunction by DB Regio AG – Mitte.
• Two argument lambda by Danny McClanahan.
• Something like by Patrick Spek.
• Past Highlights by The Perl Shop.
• BEAM vs MOAR? by MaMo.
• Acing an interview by Carl Mäsak.
• An abstract concept by Josh.
• Participera au GSOC by Mongueurs de Perl.
• Pretty neat language by Danny McClanahan.
• Looking for students by Kane Valentine.
• Thanks by Michal Jurosz.
• Clean sheet design by MaMo.
• Hella cool by Daisuki Maki.
• GraalVM is delivering by Adam Leventhal.
• Giving Perl 6 a try by Michael Burge.
• Not a Perl 6 guy by 𝕃𝕠𝕜𝕚.
• Just load Scala 2 into Scala 3? by Timo Paulssen.
• The temptation of Rakudo by はるかみ☆ (まさきはるか).
• And then some more by Robert Clausecker.
• Share your challenges by Mohammad S Anwar.
• Instead of Perl 6 by JJ Merelo.
• Awesome by JJ Merelo.
• Released? by Sigeto Tanaka.
• Language specification by こたつがめ.
• Back into the groove by Joelle Maslak.
• Enabling parsers by Nikola Mandic.
• Pretty big fan by 🌲 🌐 🌹.
• Butterfly Project is back! by JJ Merelo.
• Parallel und asynchron by Herbert Breunung.
• Support this grant by brian d foy.
• Crochet! by @doomyflo@framapiaf.

Perl 6 in comments

• Compiling on AIX 7.2 again! by ItchyPlant.
• Don’t ask me by Ralph Mellor.
• Perl 6 does the right thing by athenot.
• How I see Perl 6 by Ralph Mellor.
• Three different things by Ralph Mellor.
• Language tweaking by Ralph Mellor.
• Three phases done differently by Ralph Mellor.
• On your scale by Ralph Mellor.
• Comparing to… by Ralph Mellor.
• Paradox by Ralph Mellor.

Perl 6 Modules

New modules:

• pack6 by araraloren.
• BitEnum by Curt Tilmes.

Updated modules:

• Date::Names by Tom Browder.
• DB::MySQL, DB:Pg by Curt Tilmes.
• ArrayHash, AWS::Session by Sterling Hanenkamp.
• Term::Choose by Matthäus Kiem.
• Tinky by Jonathan Stowe.
• Algorithm::LibSVM by Itsuki Toyota.
• List::UtilsBy, List::MoreUtils, List::SomeUtils, List::Util, List::AllUtils, P5opendir, DirHandle, P5caller, P5getgrnam, P5getnetbyname, P5getprotobyname, P5getpwnam, P5getservbyname, P5localtime, P5times, Memoize, P5built-ins by Elizabeth Mattijsen.
• Libui by Travis Gibson.

Winding Down

A nice week with plenty of thought-provoking blog posts and comments. And some nice new optimizations as well. Be sure to tune in next week for more Perl 6 news!

This week saw a lot of long awaited releases. Most important is probably the announcement of the release of the free Community Edition of Comma, a powerful, yet free, Perl 6 IDE (/r/perl/, /r/perl6 comments). And at a small subscription fee, you get even more features, such as test coverage reporting, profiling and more refactoring tools. Please feel free to try out the free version before deciding on needing more functionality!

Rakudo 2019.03 Released

Aleks-Daniel Jakimenko-Aleksejev and Samantha McVey hung on in there and got the Rakudo Compiler Release 2019.03 out of the door. Which means the world will never see a 2019.01 or a 2019.02 release of Rakudo Perl 6. And it will give people some more time for the 2019.04 release!

Claudio Ramirez made sure there are new Linux packages for this release. And JJ Merelo, just a few days later, announced brand new Docker images. And Naoum Hankache created a release candidate for Rakudo Star 2019.03: please check it out so that this can be released to the general public soon!

JIT Grant report

Mark A Jensen reports on the progress that Bart Wiegmans is making on his MoarVM JIT Compiler Expression Backend Maturation grant. The report also hopes for advice on a register allocation conundrum that the grantee is facing.

Perl6.eu

Arne Sommer has started a new blog about Perl 6. In his first post he expands on some “what if” scenarios in which the “$” sigil is replaced by either “€“, or even “£“. Yours truly wonders why “¥” was left out of this research :-). The article shows some interesting attempts at making the alternate sigils work, especially about the problems encountered when subclassing the Perl 6 grammar itself (Reddit comments).

German Perl Workshop

Three days of Perl presentations in a Bavarian background. Thomas Klausner is the first to blog about it (“Perl 6 keeps getting to look cooler and cooler”). And then there are the slides of most of the Perl 6 related presentations:

• Escape analysis and related optimizations for Perl 6, Understanding react, supply, and whenever by Jonathan Worthington.
• Perl 6 One-Liners, Creating a Compiler in Perl 6 by Andrew Shitov.
• Run Perl in the Browser with WebPerl! by Hauke Dämpfling.
• Parsen mit Zuversicht (Deutsch) by Lars Dieckow.
• & goto ist so nützlich (Deutsch) by Herbert Breunung.

And to give you a visual impression: Wendy van Dijk has started uploading many, many pictures of this German Perl Workshop.

Fukuoka Perl Workshop

Slipped by the attention of yours truly, but last weekend also saw the 28th Fukuoka Perl Workshop, with at least one Perl 6 presentation by AnaTofuZ: Inside of the Perl 6.

European PerlCon Monthly Update

Andrew Shitov has posted the update of March for developments relating to the European Perl Conference in Riga. Such as a Perl 6 presentation about Console-oriented Sites by Igor Chubin. Or the available workshops before the conference starts. Or the Send-A-Newbie program, kindly sponsored by Geekuni.

Weekly Perl 6 Challenge

Mohammad S Anwar is still looking for people willing to participate in a Weekly Perl challenge, be that in Perl 5 or Perl 6. Please drop him a line at mohammad.anwar@yahoo.com if you’re interested. And remember, you don’t have to be an expert to join the challenge!

Core Developments

• Ticket status of the past week.
• Many ops are now also JITted, thanks to the work of Daniel Green. He also added a smrt_intify for faster string -> integer conversions.
• Timo Paulssen continued his work on the heap profiler.
• Stefan Seifert fixed a problem in the JIT of the readuint op.
• Paweł Murias improved the stack trace of exceptions thrown by code in an EVALFILE.
• Elizabeth Mattijsen improved the .perl representation of a Parameter object, specifically if it was a constant.
• Nick Logan fixed some issues with the Kernel shelling out to uname to obtain certain kernel related information.
• And not a lot more on account of the releases and the German Perl Workshop.

1000+ Questions about Perl 6

The 1001st Perl 6 question on StackOverflow has been asked!

• Terminal::Print how to prompt the user for input text? by user2145475.
• Crashes, “left argument in overloaded package Perl6::Object” by con.
• Creating a Maybe type by Ben Davies.
• “SDK is not set” in Comma IDE by JJ Merelo.
• Adding a sigil with Slangs by Arne Sommer.
• Defaults for slipped hashes and slurpy auto variables by drclaw.
• Module not found when extracting documentation by uzlxxxx.
• react on a supply from a sequence by Fernando Santagata.
• How to parser JSON and add some custom strings? by chenyf.
• What is the difference between nqp::if and if in an .nqp file? by Håkon Hægland.

Meanwhile on Facebook

• Stickers! by Wendy van Dijk.
• Perl 6 Tutorial by Jeff Goff.
• New Perl 6 Blog by Arne Sommer.
• New PerlCon Sponsor by PerlCon.

Meanwhile on perl6-users

• lp0 by ToddAndMargo.

Meanwhile on Twitter

• Can’t believe by Ben Davies.
• A different beast by Leon Timmermans.
• Perverted by YamaGw.
• Even with syntax error by ○○().
• Mentioned by Mohammad S Anwar.
• Dead as The Hurd by Perry E. Metzger.
• Only following by chee.
• Eternal by Felix The Bestovitch.
• No √, alas by %20｜1793 (+42).
• Looks like a duck by TMX.
• Absentee LeeJo by London Perl Workshop.
• Inside by 八雲アナグラ.
• First! by chenyf.
• See you at Opensouthcode by JJ Merelo.
• Grammars like Perl 6’s by Alex v0.3 (iblaħ).
• Code for Perl 5 and Perl 6 by Brad Gilbert.
• Resumable exceptions by Marco Aurélio da Silva.
• “1” is 1 by Ziphil Shaleiras ╹ω╹.
• Second day by London Perl Workshop.
• Your own compiler? by London Perl Workshop.
• Parsing German trafficsigns by German Perl Workshop.
• Autographing by London Perl Workshop.
• Wonderful regular expressions by 剣持淳也.
• First translation by brian d foy.
• Contribute, please by London Perl Workshop.
• slack and catchup by London Perl Workshop.
• Crazier ones by Yannn.
• Bailador by JJ Merelo.
• Suddenly, an IDE by Michal Wojciechowski.
• Rather fond of Perl 6 Grammars by Rebecca Turner.
• A long time by JJ Merelo.
• A reminder by JJ Merelo.
• Register now! by Mongueuers de Perl.
• Useful one-liners by PerlPlayer.
• Reading to Dresden by PerlPlayer.
• Final presentation by London Perl Workshop.
• A family by David Strumfels.
• Next one in Erlangen by London Perl Workshop.
• Convert directly by 八雲アナグラ.
• Weekly changes by Kaoru Nagashima.
• Change to container by JJ Merelo.
• First talk accepted! by Jeff Goff.
• Slides by Jonathan Worthington.
• Maybe by Meme Overflow.
• That’s right by Ryota Kameoka.
• Your take? by MaMo.
• Perl 6 hot now by お惣菜.
• Was learning Perl 5 by Yuuki Galaxy.
• A better choice by MaMo.
• New love by Mohammad S Anwar.
• 80’s keypad by Nova Patch.
• Staring into the abyss by michael.
• Really cool! by chenyf.
• Pretty Awesome by progmofo.
• Commercial API client by The Perl Shop.
• Tickets available by Jonathan Worthington.
• Integration work by Humberto Massa.

Perl 6 in comments

• Could reject by Ralph Mellor.
• Thank you! by bobthecimmerian.
• Tighter or looser by Ralph Mellor.
• Same as Go to Python by Brad Gilbert.
• Recommend for new projects by Brent Laabs.
• Cool story by Brent Laabs.
• Make up das Mind by Ralph Mellor.

Perl 6 Modules

New modules:

• Intl::UserLanguage by Matthew ‘Matéu’ Stephen Stuckwisch.
• Net::RCON by Kane ‘kawaii’ Valentine.

Updated modules:

• JSON::Name, JSON::Marshal, JSON::Class, META6, Test::META by Jonathan Stowe.
• Smack by Sterling Hanenkamp.
• TAP, App::Prove6 by Leon Timmermans.
• Bailador by Martin Barth.
• GTK::V3, GTK::Glade by Martin Timmerman.
• Test::HTTP::Server by Simon Proctor.
• Random::Choice by Itsuki Toyota.
• Concurrent::Stack by Jonathan Worthington.
• Test::Output by JJ Merelo.
• DB, DB::MySQL by Curt Tilmes.

Winding Down

Plenty of good, new and exciting things happened the past week. Conferences and workshops are always a good reason to get stuff out. Too bad that means that the work on the core suffers. Pretty sure that will pick up again in the coming week. So see you at the next Perl 6 Weekly!

It’s official: the Perl Foundation is one of the organizations participating in the Google Summer of Code this year. So if you are a student looking for some cool things to do this summer related to Perl 6 (but also Perl 5 if you are more so inclined), be sure to contact Mark Keating, Makoto Nozaki or JJ Merelo. If you’d like to participate but don’t have any inspiration yet, have a look at the current list of ideas! (Facebook comments, related tweets: 1, 2).

German Perl Workshop

The German Perl Workshop is almost here (6 – 8 March). In the final program, there are quite some Perl 6 related presentations:

• Parsen mit Zuversicht by Lars Dieckow.
• Escape analysis and related optimizations by Jonathan Worthington.
• Understanding react, supply, and whenever‎ by Jonathan Worthington.
• Creating a compiler by Andrew Shitov.
• Perl 6 one-liners by Andrew Shitov.
• Und goto ist sooo nützlich by Herbert Breunung.

Hope to see you there!

Swiss Perl Workshop Dates

Lee Johnson didn’t keep us in suspense very long: the Swiss Perl Workshop 2019 will be on 16/17 August, about a week after the European Perl Conference. This should make it easier for travellers from far away to combine the two events, with some vacation in Europe inbetween.

Future features of Sparrow

Alexey Melezhik has blogged about the future features of Sparrow, and about how he’s progressing on porting all of Sparrow to Perl 6 (from Perl 5).

London.pm Tech Meet

Mohammad S Anwar describes the first Tech Meet of 2019, with Perl 6 presentations by Simon Proctor (about meta-operators) and Fernando Corrêa de Oliveira (about the Red ORM).

An API for Holidays

Tom Browder has taken on to blogging about his journey of creating a Perl 6 version API for Holiday API (Public Holidays and Observances for Developers). It’s indeed great to see Perl 6 there in the list of supported languages, with Python, Ruby, PHP, Go and Node.js! (Reddit comments).

And the winner is…

Alexander Kiryuhin (Altai-man) is the winner of last weekend’s Squashathon. The plushy Camelia will be in the mail to him shortly. Congratulations! And also thanks to all of the other people that have participated!

Core Developments

• Ticket status of last week and the month of February.
• Daniel Green improved the error message on sprintf if a value could not be coerced to the type indicated in the format string.
• Paweł Murias made it possible to evaluate generated code at runtime in the browser (on the Javascript backend).
• Vadim Belman fixed a problem with gisting certain values in certain error messages.
• Code by Jeremy Studer fixed an issue with laziness detection of the [\+] meta-operator.
• Nick Logan replaced the internal JSON parser with one that is based on JSON::Fast, which should make zef quite a bit faster.
• Code by Vittore F. Scolari made the say statement about 8% faster.
• And some other fixes and improvements

Questions about Perl 6

Only 9 questions to go for 1000 StackOverflow questions!

• Are private attributes hidden by default by .perl and .gist by JJ Merelo.
• REPL print behaviour by ozzy.
• A Regex to match a delimited comment by Sterling Hanenkamp.
• Recursive regular expression? by Amadan.
• First array element places into string, 2nd fails to place into string by con.
• Perl 6 Hosting by oxylene.
• Map signature mismatch with Whatever? x vs X vs xx by Ruben Westerberg.
• Finding out the port an asynchronous socket is binding to? by JJ Merelo.

Meanwhile on Facebook

• The fate of a FatRat by Wendy van Dijk.
• Camelia on Thingyverse by Wendy van Dijk.
• No longer compiles BEGIN by Jeff Goff.
• Lightning talks at PerlCon by The European Perl Conference.

Meanwhile on perl6-users

• Travis-CI by Fernando Santagata.
• .payload by ToddAndMargo.
• Valid values? by ToddAndMargo.

Meanwhile on Twitter

• Similar to grammars? by Keith Devens.
• How to think by Pradeep Pant |प्रदीप.
• Make plans by @rit ebooks.
• The XXX operator by Simon Proctor.
• Embedded in PostgreSQL by Francisco Ferreyra .
• First Conflict by Mohammad S Anwar.
• Contradictory? by Mohammad S Anwar.
• Tighter precedence by Simon Proctor.
• Always in strict mode by Simon Proctor.
• Still wired by Mohammad S Anwar.
• Creating your heart desires by MaMo.
• First PR by Mohammad S Anwar.
• Lost a digit? by kamimura.
• Highlights by The Perl Shop.
• A hard topic by Perlゼミ.
• Hash.push is different by ryn1x.
• A Perl 6 module this month? by Pull Request Club.
• Operators and Metaoperators by Simon Proctor.
• Anyone in charge? by JJ Merelo.
• Joined by Mohammad S Anwar.
• An excellent ORM by JJ Merelo.
• Simon presenting by Mohammad S Anwar.
• Operator overloading amazing by Mohammad S Anwar.
• on Red ORM by Mohammad S Anwar.
• First time speaker by London Perl Workshop.
• Do grant work by gamer girl…….constructed of pee.
• Our speakers by PerlCon.
• What happened? by Jeremy Lu.
• Because PHP by playing poker for “fun”.
• Reletive precedence by Varun Gandhi.
• sub by @bb010g@weirder.earth.
• Already supported by ‘(allen hai).
• Best designed by MaMo.
• Can do that natively by ‘(allen hai).
• Not the only problem by Tony Finch.
• Anoter platform? by Mohammad S Anwar.
• It got merged by Mohammad S Anwar.
• Collecting Challenges by Mohammad S Anwar.
• Long ago by TMX.
• Perl 6 at #3 by Mohammad S Anwar.
• Stored procedures in Perl 6 by The Perl Shop.

Perl 6 in comments

• Perl 6 not mentioned by daotoad.
• 👍 $x == $y; by Simon Proctor.
• Same as META II by Ralph Mellor.
• Code participating in matching decisions by Ralph Mellor.
• Never happened for me by oofoe.
• The new Duke Nukem 3d? by futureastronaut.
• Have you tried :from? by Ralph Mellor.
• Remedies some of the deficiencies by oldie.
• Automatic proto by Ralph Mellor.
• Still only a few chapters by mr_clicky_keys.
• Looks like Perl 6 by Ralph Mellor.
• No rejection yet by Ralph Mellor.

Perl 6 Modules

New modules:

• NativeLibs by Salvador Ortiz.
• Random::Choice by Itsuki Toyota.

Updated modules:

• AttrX::Mooish by Vadim Belman.
• Font::FreeType, HTML::Canvas::To::PDF by David Warring.
• Numeric::Nearest by Drclaw.
• Date Names by Tom Browder.
• Red by Fernando Correa de Oliveira.
• Term::Choose::Util by Matthäus Kiem.
• Test::HTTP::Server by Simon Proctor.
• LibCurl by Curt Tilmes.
• Cache::Async by Robert Lemmen.
• Smack, Path::Router by Sterling Hanenkamp.
• Perl6::Parser by Jeff Goff.
• Archive::SimpleZip by Paul Marquess.
• GTK::V3 by Marcel Timmerman.
• Grid by Haytham Elganiny.
• XDG::BaseDirectory by Jonathan Stowe.
• Algorithm::GooglePolylineEncoding, Proc::InvokeEditor, Trait::Env, Test::HTTP::Server, Range::SetOps by Simon Proctor.

Winding Down

It’s good to see a lot of tweets, new modules, updated modules, presentations, and to top it off this week, participation in the GSOC. Cool stuff. See you again next week, when yours truly will tell you how she recovered from the German Perl Workshop and the trip there and back again.