Haskell

News about the Haskell programming language from 2024-02-29.

The GHC developers are happy to announce the availability of GHC 9.8.2. Binary distributions, source distributions, and documentation are available on the release page....

News about the Haskell programming language from 2024-02-22.

In this (beginner-friendly) episode, we will use Dijkstra's shortest paths algorithm as an example of how one can go about implementing an algorithm given in imperative pseudo-code in idiomatic Haskell. We will focus on readability, not on performance.

In this episode, Wouter and Andres interview Ivan Perez, a senior research scientist at NASA. Ivan tells us about how NASA uses Haskell to develop the Copilot embedded domain specific language for runtime verification, together with some of the obstacles he encounters getting to end users to learn Haskell and adopt such an EDSL.

Today, I am happy to announce the initial release of the botan-bindings and botan-low packages to hackage. This is the result of more than 7 months of sustained effort to provide a series of bindings to the Botan C++ cryptography library, and was made possible through support from the Haskell Foundation and funding provided by...

The goal of this post is to give a brief introduction to hmatrix’s Static API and show how to implement a type-safe zeros function in two different ways.

Excessive laziness is a common worry when analyzing the performance characteristics of Haskell programs. It can lead to higher than expected memory usage due to heap objects being retained for longer than necessary. This is known as a “space leak”. Like any other performance issue, it can be tricky to track down and fix,...

Hello everyone, Join me on March 14th for an engaging event centered around all things Haskell. Our lineup includes fantastic speakers Pierre Thierry, Ashesh Ambasta, Roel van Dijk, Christiaan Baaij Bas van Gijzel and Nicolas Biri who will delve into their personal journeys, the community, tackling challenges, and much more....

News about the Haskell programming language from 2024-02-08.

By default, Haskell does not provide call stacks when errors occur. To get call stacks, one can add the HasCallStack constraint to any function to request it. However, did you know that doing this carelessly can cause memory usage to explode...

News about the Haskell programming language from 2024-02-01.

In this beginner-oriented episode we introduce a useful combinator called repeatedly, which captures the concept "repeatedly execute an action to a bunch of arguments". We will discuss both how to implement this combinator as well as some use cases....

Jezen Thomas is co-founder and CTO of Supercede, a company applying Haskell in the reinsurance industry. In this episode, Jezen, Wouter and Joachim talk about his experience using Haskell in industry, growing a diverse and remote team of developers, and starting a company to create your own Haskell job.

Dear Haskellers, The GHC Steering Committee is seeking nominations for new members. The committee scrutinizes, debates and eventually decides to accept or reject proposals to change the language or major features supported by GHC...

News about the Haskell programming language from 2024-01-25.

On behalf of the Haskell.org committee, I’m pleased to announce the results of the Summer of Haskell 2023. Many impressive and valuable contributions were made to the Haskell ecosystem which I’m excited to share with you in this post...

Hi Friends of Haskell, It is our pleasure to announce that ZuriHac 2024 will take place Saturday 8 June - Monday 10 June 2024 as a physical event at the Rapperswil-Jona campus of the OST Eastern Switzerland University of Applied Sciences. The focus of ZuriHac is being a community event and hackathon, but we will also have some...

I recently merged linear let- and where-bindings in GHC. Which means that we’ll have these in GHC 9.10, which is cause for celebration for me. Though they are much overdue, so maybe I should instead apologise to you....

News about the Haskell programming language from 2024-01-18.

Sometimes, for example when working with type-level lists, you have to compute with constraints. For example, you might want to say that a constraint holds for all types in a type-level list. In this episode, we will explore this special case of type-level programming in Haskell. We will also revisit type class aliases and take...

Today, Matthías and Joachim are interviewing Moritz Angermann. Moritz knew he wanted to use Haskell before he knew Haskell, fixed cross-compilation as his first GHC contribution. We'll talk more about cross-compilation to Windows and mobile platforms, why Template Haskell is the cause of most headaches, why you should be...

News about the Haskell programming language from 2024-01-11.

Consider a Haskell thread trying to read from a TMVar:...

Avi Press gave an excellent talk at Scale By the Bay 2023 about difficulties using Haskell at a startup. He mentions that even experienced Haskellers don’t always know how to use fundamental parts of the language. In particular,...