Hacker News: sjakobi

New comment by sjakobi in "Writing Parquet files using Haskell"

sjakobi — Fri, 25 Sep 2026 15:41:14 +0000

In many cases it's possible to write Haskell that runs as fast as a given C implementation. However the result will usually not be idiomatic Haskell.

New comment by sjakobi in "What functional programmers get wrong about systems"

sjakobi — Tue, 10 Feb 2026 19:56:05 +0000

Wrong link?!

New comment by sjakobi in "Reasons to tour by bicycle"

sjakobi — Tue, 21 Jun 2022 18:05:27 +0000

Hmm, that bike looks very much like Swapfiets' "Deluxe 7" model, which has a 7-gear hub, so not a single speed! The gears also explain why there are three wires leading to the handlebar (2 for the brakes + 1 for the gears).

Nevertheless, the lowest gear on that bike is still not much help on a steep ascend like this.

New comment by sjakobi in "Israel, Cyprus and Greece agree to link power grids via subsea cable"

sjakobi — Mon, 08 Mar 2021 15:49:08 +0000

How does Lebanon lose from this project?

New comment by sjakobi in "Ask HN: Recommendations for Good TUI Libraries (Text User Interface)?"

sjakobi — Tue, 08 Sep 2020 21:12:34 +0000

http://hackage.haskell.org/package/brick is popular in the Haskell world.

New comment by sjakobi in "On Marketing Haskell"

sjakobi — Sun, 31 May 2020 07:29:54 +0000

Discussion on r/haskell: https://www.reddit.com/r/haskell/comments/gtm3w0/on_marketin...

New comment by sjakobi in "On Marketing Haskell"

sjakobi — Sun, 31 May 2020 07:24:34 +0000

There a several companies who benefit massively from using Haskell, not least by attracting talent!

The most recent instance is probably Juspay: https://github.com/juspay

New comment by sjakobi in "On Marketing Haskell"

sjakobi — Sun, 31 May 2020 07:21:52 +0000

jdh30, the author of both comments, is a massive OCaml fanboy and Haskell hater. I've seen him try to take Haskell performance numbers and interpret them using the wrong units to make them look worse. I'd take anything that he says about Haskell with a big, big grain of salt!

New comment by sjakobi in "Re: Integrating "safe" languages into OpenBSD? (2017)"

sjakobi — Sun, 03 May 2020 16:35:05 +0000

Regarding build tools for C, you might find this one interesting:

https://github.com/vmchale/cpkg

New comment by sjakobi in "The Hardest Program I've Ever Written – How a code formatter works (2015)"

sjakobi — Sat, 28 Mar 2020 03:21:54 +0000

> Hughes' pretty printer works really well for pretty-printing Haskell code, but Wadler's is more flexible for pretty-printing C-style languages where there is a dedented closing brace at the end of scopes.

That's very interesting! So far I've only used Wadler-Leijen-style prettyprinters.

Are Hughes-style pretty printers "better" in some way for Haskell-like documents? If so, why?

New comment by sjakobi in "It's not what programming languages do, it's what they shepherd you to"

sjakobi — Fri, 27 Mar 2020 15:25:18 +0000

There's a similar blog post by Gabriel Gonzalez which focuses on the incentives set in Haskell:

http://www.haskellforall.com/2016/04/worst-practices-should-...

Version 8.10.1 of the Glasgow Haskell Compiler has been released

sjakobi — Wed, 25 Mar 2020 02:28:02 +0000

Article URL: https://www.reddit.com/r/haskell/comments/fo6nu7/ghc_8101_now_available/

Comments URL: https://news.ycombinator.com/item?id=22681460

Points: 4

# Comments: 0

New comment by sjakobi in "SoundCloud raises $75M from SiriusXM"

sjakobi — Wed, 12 Feb 2020 22:30:03 +0000

Thanks for mentioning BR Heimat! I didn't know I needed this! :)

New comment by sjakobi in "A Pythonista's Review of Haskell"

sjakobi — Fri, 31 Jan 2020 16:15:53 +0000

FYI OP: I posted your review on r/haskell where it got several comments: https://www.reddit.com/r/haskell/comments/ewjnf4/a_pythonist...

New comment by sjakobi in "Arduino-copilot makes it easy to use Haskell to program an Arduino"

sjakobi — Sun, 26 Jan 2020 10:47:43 +0000

Doctests are often useful to briefly demonstrate how something works: http://hackage.haskell.org/package/doctest

They are a bit finicky to set up though.

Another good resource: http://yannesposito.com/Scratch/en/blog/Haskell-Tutorials--a...

New comment by sjakobi in "Arduino-copilot makes it easy to use Haskell to program an Arduino"

sjakobi — Sun, 26 Jan 2020 10:42:00 +0000

Hm, I'm afraid to say that I can't find a good resource on how to write and build docs for Haskell libraries. Maybe that's a tutorial you could write once you've figured it out?! ;)

Here are a few links though:

* https://ndmitchell.com/downloads/slides-drive-by_haskell_con...

* https://haskell-haddock.readthedocs.io/en/latest/markup.html

* https://docs.haskellstack.org/en/stable/build_command/#synon...

Also, maybe join the #haskell-beginners channel on Slack: https://fpchat-invite.herokuapp.com/

There are other platforms too though, e.g. https://www.reddit.com/r/haskellquestions/, https://discourse.haskell.org/

New comment by sjakobi in "On Preventing Programming Languages from Interfering with Programming (1975) [pdf]"

sjakobi — Mon, 20 Jan 2020 07:20:33 +0000

This sounds similar to the process used for some parts of Cardano. Duncan Coutts talked about this in this video:

https://www.youtube.com/watch?v=TZGVgNsJSnA

Dhall – Year in review (2019-2020)

sjakobi — Sun, 05 Jan 2020 20:07:09 +0000

Article URL: http://www.haskellforall.com/2020/01/dhall-year-in-review-2019-2020.html

Comments URL: https://news.ycombinator.com/item?id=21963672

Points: 2

# Comments: 0

New comment by sjakobi in "Algebraic Data Types: Things I wish someone had explained about FP"

sjakobi — Tue, 19 Nov 2019 18:40:44 +0000

> Even Haskell doesn't get it right: there are no exhaustiveness checks on pattern matches

Just enable -Wincomplete-patterns or -Wall!

New comment by sjakobi in "A look back on OCaml since 2011"

sjakobi — Sun, 22 Sep 2019 15:06:25 +0000

What are modular implicits?