Issue 168

Issue 168 2019-07-18

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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.

Featured

Building and Debugging FRP with CodeWorld and Reflex by Chris Smith

I’ll show you how the system has changed, and what you can do now that you couldn’t do before.
Evaluation of function calls in Haskell by Laszlo Treszkai

In this post I analyze the runtime differences between point-free and pointful definitions.
Fancy types for CSV library by Oleg Grenrus

This blog post is a thought on a following question: Can we make Cassava (= CSV) stuff a bit safer using fancy types?
Global Implicit Parameters by Csongor Kiss

Unlike type classes, implicit parameters are bound locally. But what if we want to bind one in the global scope?
Haskell-y Ever After: Summer Tales for Every Full-stack Developer (Part One) by Andika Demas Riyandi

A Google Summer of Code’s student story about implementing Haskell on the Hackage Matrix Builder’s frontend application using Functional Reactive Programming approach.
How I Intend to Help Steer GHC by Sandy Maguire

Yesterday I was (somewhat surprisingly) brought on as a new member of the GHC steering committee.
HSoC — Hadrian Optimisation: First GHC Contribution (Update 4) by James Foster

Everyone should now get a few minutes knocked off their GHC build times (with Hadrian anyway), with maybe a bit more or less depending on your hardware and build flavour.
Open Sum Types in Haskell with world-peace by Dennis Gosnell

world-peace is not as fast as some other libraries providing open sum types, but it does have much better documentation than other libraries.
Revelations from repetition: Source code headers in Haskell and Python by Simeon Carstens and Matthias Meschede

How do languages differ in their boilerplate content? Is it only the content of the boilerplate that changes, or also its quantity?
Show and Tell: Game: Water-Wars by FailWhaleBrigade

The game idea was to clone “Towerfall”, a fast paced multiplayer shooting/platforming game.

Jobs

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In brief

Package of the week

This week’s package of the week is ghc-source-gen, a library for generating Haskell source code. It uses the ghc library to support recent language extensions, and provides a simple, consistent interface across several major versions of GHC.

Call for participation

ormolu: Constructor ticks are removed from operator constructors, leading to warnings with -Wall

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