Issue 192 2020-01-02
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.
A Few Haskell Highlights of 2019 by Gints Dreimanis
To close out the year, I’ve asked my coworkers about notable highlights from this year and separated the answers into 4 groups: releases, books, talks, and blog posts.
A plea to Haskellers everywhere: Write Junior Code by Matt Parsons
Let us grow Haskell in industry by writing simpler code and making room for the less experienced.
Hire and Train Haskell Junior Developers by Vladimir Ciobanu
I think the reason we don’t have more people doing Haskell is we’re not actually hiring junior developers, and when we do, we don’t set them up for success by properly training them.
Fancy Haskell by Dan Fithian
Fancy Haskell code has a time and a place. Make sure to clearly identify the tradeoffs when reaching for anything fancy. Incorporate those tradeoffs into an ideal manifestation of simple code, and then interate until code represents that ideal.
Runtime based caching by Alexander Vershilov
When many users send requests, we have to generate lots of connections and perform many queries. The obvious solution here is to introduce a caching mechanism. In this post, I’m going to describe some solutions available in the Haskell ecosystem and our solution, which is quite interesting.
Software Design and Architecture in Haskell by Alexander Granin
A structured set of materials on how to build real-world applications in Haskell.
This post first describes known approaches to construct a
HasLensclass that allows retrieving a
Lensinto a type. Then I outline a new possible solution and show how examples that are not convenient to handle with other solutions can be handled directly with the new one.
Keeping Database Tests Fast with
tmp-postgresby Jonathan Fischoff
When testing with
rollbackand separate postgres instances can help keep test suites fast even as the project grows larger.
Elegant AST Parsing and Building with Prisms by Yair Chuchem
Following my previous post which suggested the use of Prisms for parsing and building, using a binary format example - I also want to show how the same idea can work nicely for parsing and building programming language syntax.
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- BazQux Reader — your friend for reading feeds (ad)
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Package of the week
This week’s package of the week is
hpath, a library that provides support for well-typed paths in Haskell.