Issue 291 2021-11-25
Welcome to another issue of Haskell Weekly! Haskell is a safe, purely functional programming language with a fast, concurrent runtime. This is a weekly summary of what’s going on in its community.
Haskell series part 7 by Pierre Guillemot
This is the seventh article of a series on the functional language Haskell for beginners. In this article we are covering map, filter, foldl and function composition.
autodocodecby Tom Sydney Kerckhove
Autodocodec is short for “Auto-documenting-codec”, or “self(auto)- documenting encoders and decoders”. Writing a
autodocodeclets you encode and decode values, and document the parser all with a single value.
(/=)by Sandy Maguire
But that made me think — why do humans need to do this by hand? Computers are good at this sort of thing. So I wrote a tiny little comby config that does the replacements we want.
Happy and Alex MVP by Solomon Bothwell
In my last post I gave a brief introduction to Happy and parser generators. In this post I will continue the story with Happy’s counterpart Alex.
Make invalid laziness unrepresentable by Tom Ellis
Thunk leaks are a major cause of unpredictable memory usage in Haskell programs; a common cause of thunk leaks is lazy fields in data structures.
Parsing Permutations by Drew Olson
I’m in a discord chat devoted mostly to the game and folks often share interesting bridge hands with one another. I decided it would be fun to build a program that parsed a simply-formatted bridge hand and produced a plain text bridge diagram.
Retrocomputing with Clash by Gergő Érdi
Retrocomputing with Clash takes the experienced Haskell programmer on a journey into the world of hardware design with Clash. Our approach is based on using Haskell to its fullest potential, using abstractions like monads and lenses in building a library of reusable components.
- Software Engineer at ACI Learning
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AI Revisited: Breaking Down BFS by Monday Morning Haskell
I figured I’d spend the last few weeks of the year with some AI related topics. This week, I’ll go over an algorithm that is really useful to understand when it comes to writing simple AI programs, and this is Breadth-First-Search.
Haskell Foundation Board meeting minutes 2021-11-18 by Théophile Choutri
You can check out the minutes and agenda for the Board meeting that took place on the 2021-11-18.
Simon Peyton-Jones - A Microsoft Research Retrospective by Compositional
With the news that Simon is leaving Microsoft Research, and now joining Epic Games, we’ve taken the opportunity to sit down and do a retrospective of his time at Microsoft Research and the various collaborations that have come about as part of that journey.
Show & tell
Hexgrip - Haskell Cloud IDE by Bit Connor
No installation, no setup, instantly load any GitHub project. Code from anywhere. Hexgrip is for beginners and professionals.
Release Candidate for
mtl-2.3by Emily Pillmore
Chessai and I are excited to announce a release candidate for
text-2.0-rc1with UTF8 underlying representation is available for testing! by Andrew Lelechenko
I’m happy to announce that the first release candidate for upcoming text-2.0 with UTF-8 underlying representation has been just uploaded on Hackage.