2017.47 More TPCiA Videos

In the past weeks, more videos from the The Perl Conference in Amsterdam have become available. Rakudo Perl 6 related videos that have been added:

• Rakudo Perl 6 – Superglue for the 21st Century by Brian Duggan (Reddit comments).
• Functional Programming in Rakudo Perl 6 by Laurent Rosenfeld.
• Spit – A Postmodern DevOps tool, written in Rakudo Perl 6‎ by Lloyd Fournier.
• It’s in the bag: How to cheat at interviews using Rakudo Perl 6 by John Haltiwanger.
• Rakudo.js – compiling Rakudo Perl 6 to JavaScript‎ by Paweł Murias.
• Function Signatures Compared – Rakudo Perl 6, Perl5.20 and Sub::​Sig‎ by Rolf Langsdorf.
• Unicode Internals of Rakudo Perl 6 by Samantha McVey.
• Rakudo Perl 6 Q&A From The Trenches‎ by Elizabeth Mattijsen.

Kudos to all behind the scenes who made the recording, processing and uploading of these videos happen!

Blog Posts

• Grant Completion Report – Rakudo Perl 6 Performance and Reliability by Jonathan Worthington.
• Deploying Pumpking Perl 5 Applications with Sparrowdo by Alexey Melezhik.
• Perl and Undecideability (2008) by Jeffrey Kegler (Reddit) comments.
• Open tickets overview by Aleks-Daniel Jakimenko-Aleksejev.

Core Developments

• Samantha McVey made collapsing of MoarVM strands (the parts of a concatenated string that hasn’t been turned into a single string yet) about 4x faster in most cases. She also fixed a bug with the utf8-c8 encoding that would combine a synthetic code point with other code points when they shouldn’t. Finally she fixed a bug in the Unicode properties database (uppercase letters not returning the Lu General_Category).
• Jonathan Worthington fixed a race condition related to cancellations and an optimizer issue regarding improper inlining of blocks.
• Bart Wiegmans fixed an off-by-one error that would cause try/catch to sometimes fail on jitted frames.
• Elizabeth Mattijsen fixed the RAKUDO_EXCEPTIONS_HANDLER=JSON feature (which outputs execution errors in JSON format) for those exceptions that contain other exceptions. She also made sure that a Proxy will no longer leak out of a Lock.protect block. Finally she made sure that an execution error in an END will not stop any other END blocks from being run. Oh, and she made concatenation of Buf and Blob objects between 1.8x and 7x faster.
• And many other fixes and improvements.

Meanwhile on Twitter

• The Quest for a 100-Year Programming Language by jfroebe.
• Fedora 27 rpm for Rakudo Perl 6 by Claudio Ramirez.
• Code Syntax Checking by Alexey Melezhik.
• Fixing Pumpking Perl 5’s utf-8 decoder by Leon Timmermans.

Meanwhile on StackOverflow

• Is there a fast parallel for loop by piojo.
• If I reassigned OUT, how can I change it back to stdout? by Eugene Barsky.
• Filtering an array with many keys of same length by Eugene Barsky.
• How to define variable names dynamically? by Eugene Barsky.
• How to concatenate two Sets of strings? by Eugene Barsky.
• How to negate/subtract regexes (not only character classes)? by Eugene Barsky.

Meanwhile on FaceBook

Format::Lisp is on the ecosystem. Not *quite* fully featured, but it handles some of the recursive directives, and the test suite will tell what it can currently handle.

Meanwhile on perl6-users

• The equivalent of Moose‘s “around” by Fernando Santagata.

Winding Down

We’re still waiting for the 2017.11 release of the Rakudo Compiler. There have been a few blockers that turned up at the last moment, which appear to have been vanquished, at least temporarily. But not in time for the deadline for this Perl 6 Weekly. So please check in again for next week’s Perl 6 Weekly for the continuing story!