Haskell Weekly


Issue 179 2019-10-03

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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.


  • GSoC 2019 for mentors: Summertime Codeness by Kowainik

    This blog post is our experience summary of mentoring for the first time in Google Summer of Code. Here we want not only to share how it feels to be a mentor but also to try motivating you to become a part of this global community event in the future.

  • Inspecting Haskell Instance Resolution by Michael Sloan

    To understand this error, you need to be able to run typeclass machinery in your head and have familiarity with the libraries involved. I think it would be great to add this contextual information to GHC, such that this variety of errors becomes more comprehensible.

  • Unifying Servant server error responses by Lukwago Allan

    The blog post is a discussion about exceptions in Servant and the servant-errors WAI middleware Haskell library, its purpose and implementation details.

  • Announcing termonad- by Dennis Gosnell

    Termonad is a terminal emulator written in Haskell. It aims to be the XMonad of terminal emulators.

  • What does a humped critter have to teach us? by Mark Karpov

    In my opinion, the module system is the most remarkable feature of OCaml. This is why I’m going to talk only about it in this post. It’s also a good opportunity to see how it relates to Haskell’s type classes.

  • Implementing graceful-close in Haskell network library by Kazu Yamamoto

    Unfortunately, most HTTP/2 server implementations do not close connections gracefully, hence browsers cannot display pages correctly in some situations.

  • What is Good About Haskell? by Donnacha Oisín Kidney

    This post aims to demonstrate some of these features in a simple (but hopefully not too simple) example. I’m going to write and package up a simple sorting algorithm in both Haskell and Python, and compare the code in each.

  • Learn Functional Programming by writing a Scheme in Haskell by Alessandro

    How to make your first functional programming language. A book review.

  • Autocompletion with deep learning by Jacob Jackson

    TabNine is an autocompleter that helps you write code faster. We’re adding a deep learning model which significantly improves suggestion quality.

  • Figuring out how to use Beam for DB migrations by William Yao

    This post collects everything I learned while trying to get up and running with Beam’s migrations, and should help you get started as well.


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In brief

Package of the week

This week’s package of the week is KMonad, a keyboard remapping utility.

Call for participation

Looking for something to work on? Browse Haskell Hacktoberfest issues on GitHub.