bitemyapp
learnhaskell
Makefile2014–2022
bitemyapp / learnhaskell
learnhaskell
Learn Haskell
33Distinct people
64Mentions
2Explicit recommenders
8KGitHub stars
What to know before exploring
What it is
Learn Haskell
GitHub
Where it is used
No documented product use was verified in the last source check.
What people are saying
I recommend this, https://github.com/bitemyapp/learnhaskell
lockfinn used a recommendation phrase. 2 indexed comments match. This is a phrase match, not a verdict.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 7:02:50 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year64 dated mentions
Observed mentions: 2014-05-20 11:05:25 UTC to 2022-11-01 06:32:14 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2014 | 2014-01-01 00:00:00 UTC | 2015-01-01 00:00:00 UTC | 23 | 1 | 22 |
| 2015 | 2015-01-01 00:00:00 UTC | 2016-01-01 00:00:00 UTC | 25 | 1 | 24 |
| 2016 | 2016-01-01 00:00:00 UTC | 2017-01-01 00:00:00 UTC | 7 | 0 | 7 |
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 2 | 0 | 2 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 2 | 0 | 2 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 3 | 0 | 3 |
From the project README
An excerpt from the repository, fetched Nov 13, 2026.
Read the project’s introduction
How to learn Haskell
This is a recommended path for learning Haskell based on experience helping others. A list of recommendations from one of the authors of the Haskell Book.
For non-English speakers
Auf Deutsch
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По-русски
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Don't sweat the stuff you don't understand immediately. Keep moving!
Community
Our IRC channel is #haskell-beginners on Libera Chat.
IRC web client here.
The haskell mailing lists.
Community Guidelines
See the community guidelines to understand the conduct that is expected in the IRC channel. You'll get a warning if you're not obviously trolling, but be aware the channel is exclusively for those learning or teaching Haskell.
Installing Haskell
Use Stack to get going with Haskell
Get Stack to get GHC installed and to build your projects.
If you don't know anything about Stack and would like an overview, check out this comprehensive Stack video tutorial.
Also, DO NOT INSTALL HASKELL PLATFORM
Instead of following the instructions on Haskell.org, get Stack.
Why not platform?
https://mail.haskell.org/pipermail/haskell-community/2015-September/000014.html
How should I learn Haskell?
The core recommendation is to read the lectures and complete all exercises/homework for the Spring 13 version of cis1940 followed by the FP course. Both are linked below. Everything else can be considered optional and is mentioned so you know where to look.
Haskell Programming from First Principles.
@dmvianna wanted me to let you know that the below are just the free recommended resources. If you're willing to check out a book, we heartily recommend our own Haskell Book! If you can't afford the book for any reasons, please email us using the contact information at our support page.
Haskell Book subsumes all of the primary resources recommended here
Yorgey's cis1940 course
Do this first if aren't getting the Haskell Book, this is the best free introduction to Haskell.
Available online.
Brent Yorgey's course is the best I've found so
far. This course is valuable as it will not only equip you to write basic
Haskell but also help you to understand parser combinators.
The only reason you shouldn't start with cis1940 is if you are not a programmer
or are an inexperienced one. If that's the case, start with
Thompson's book and transition
to cis1940.
Functional Programming course
This is the course we recommend doing after Yorgey's cis1940 course
Available on github here.
This will reinforce and give you experience directly implementing the
abstractions introduced in cis1940, this is practice which is critical to
becoming comfortable with everyday uses of Functor/Applicative/Monad/etc. in
Haskell. Doing cis1940 and then the FP course represents the core
recommendation of my guide and is how we teach everyone Haskell.
Supplementary course after cis1940 and the FP course
Provides more material on intermediate topics
cs240h is available online:
Spring 14
Winter 16
This is Bryan O'Sullivan's online course from the
class he teaches at Stanford. If you don't know who he is, take a gander at half
the libraries any Haskell application ends up needing and his name is on it. Of
particular note if you've already done the Yorgey course are the modules on
phantom types, information flow control, language extensions, concurrency,
pipes, and lenses.
Resources for specific topics in Haskell
These resources are not vetted or tested with learners as cis1940 and FP course have been, but they're linked in the topic listing so you have ideas on where to begin. This includes things like intermediate/advanced concepts and subjects like tooling and text editors.
Dialogues
Hosted in this repository here.
These are actually pretty important and helpful. Look here for deep dives on a
variety of topics.
Read the full README on GitHubWhat Hacker News says
23 sourcesI've taught a lot of people Haskell, including non-programmers.
After a few months of starting from nothing (zero programming experience), my main non-programmer student is now coauthoring a book on learning Haskell [1] with me.
Learning Haskell doesn't have to be hard. It helps to follow a guide designed by people that have plenty of experience teaching Haskell [2].
There is an IRC channel at #haskell-beginners on Freenode.
The author of the post refused to avail himself of other peoples' help, particularly via the mailing list. If you seek help you can learn Haskell and apply it to practical problems in less time than you'd think.
[1]: http://haskellbook.com
[2]: https://github.com/bitemyapp/learnhaskell
In Language is not importantThere's only one thing you need to learn Haskell:
1. Forget everything you know and follow the types.
2. https://github.com/bitemyapp/learnhaskell
In The Unreasonable Effectiveness of C (2013)7.8.3 is the current version of GHC.
I have no idea if these are compatible with CentOS or RHEL, but I have install instructions for Fedora in my guide: https://github.com/bitemyapp/learnhaskell#fedora-20 that were contributed by davidfetter on github.
In Give me back my sanity: How I had to install Pandoc in a CentOS Docker containerIt’s a bit like the transition from the bronze age to the iron age.
It wasn’t a sudden switch and while the iron tools owned the future, they were inferior at first. Took a long time before iron tools and weapons became the most popular thing, even after iron tools could be made that were superior to bronze.
Popularity doesn't say anything about tool quality.
A lot changed from 2010-2012 for Haskell. There was an explosion of libraries and tool fix-up. This continues, no doubt, but it has shifted the equation in favor of tools that don't have to make compromises that harm productivity.
I teach Haskell in a decided un-academic manner. This is partly because I have no academic background nor degree. It is also because I teach people Haskell in a manner designed to enable its use for practical projects.
This is the guide I use to teach peopl
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e Haskell: https://github.com/bitemyapp/learnhaskell
I've taught Haskell successfully for the last year to programmers and non-programmers.
The principal thing I push learners towards after Haskell would be things like Coq and Agda. Coq has better learning materials, Agda has Haskell integration.
The usual sequence is [1] followed by [2].
Augment with [3] and [4] as needed.
One negative thing about Coq/Agda/Idris is they don't have a satisfactory encoding of typeclasses [5]. This is a problem in general with all dependently typed languages. Proof obligations get "churned" by changing code and the only tool to address that is extremely general proof terms combined with proof search. The best proof search is Coq, but the code extraction is heartburn-inducing for Haskell users.
Whereas in Haskell, we get extremely lightweight and type-safe code refactoring because of the way in which we leverage typeclasses and parametricity. This turns out to be very valuable as your projects g
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et more serious.
That said, still entirely worthwhile to learn Coq or Agda.
By the way, this [6] is how I teach Haskell. Working on a book as well.
[1]: http://www.cis.upenn.edu/~bcpierce/sf/current/index.html
[2]: http://adam.chlipala.net/cpdt/
[3]: http://cheng.staff.shef.ac.uk/proofguide/proofguide.pdf
[4]: http://www.amazon.com/How-Prove-It-Structured-Approach/dp/05...
[5]: http://wiki.portal.chalmers.se/agda/pmwiki.php?n=ReferenceMa...
[6]: https://github.com/bitemyapp/learnhaskell
Annnd if you'd like to be able to write code as fast as Rust but get it done faster than Python or Ruby, take a look at Haskell.
- ex-Python and Clojure user, teach Haskell now.
https://github.com/bitemyapp/learnhaskell
In A Fresh Look at Rust>Sometimes it turns out you need to do something with IO somewhere, and now you have to change all the functions down the way to use it.
Que no!
Bloodhound, which is expressly about talking to an outside database, has >500 type signatures. Fewer than 40 have IO in them. You most certainly do not need to add IO to pure code just because something in IO invokes it.
This is why we have things like Functor, monad transformers, etc.
Want to know more?
https://github.com/bitemyapp/learnhaskell
In Getting It Done with HaskellI teach a lot of Haskell [1] and observe a lot of people teaching Haskell. Write Yourself a Scheme is not representative of how the Haskell community teaches Haskell.
I can't even remember the last time it was cold-suggested to somebody.
The last person I knew to do so, did so knowing they were going about it the "hard way". They also did it with the intent of actively upgrading/updating the code WYASI48H as they went into a more modern style. They gave a talk on it after.
It's a good way to firm up your knowledge if it's the sort of project that interests you, but needs love and isn't a good introduction for most.
[1]: https://github.com/bitemyapp/learnhaskell
In Getting It Done with HaskellYes, really. Reference the SO post linked to; there are numerous people who had issues updating cabal-install. I've seen them referenced in /r/haskell and in Haskell documentation. The homebrew installation of haskell-platform may resolve some of these issues; I'm not familiar with it.
Additionally, you're working with the knowledge that once you install Haskell Platform, you need to update cabal-install (This is not something a newcomer would expect given that they just downloaded cabal via Haskell Platform).
Just getting the Platform installed is misleading as well; there's still the issue of dealing with package conflicts which happens frequently in Haskell and is non-trivial to deal with for a newcomer.
Finally, using Haskell Platform at all might cause troubles; it's explicitly recommended against by the popular Getting Started guide
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by bitemyapp https://github.com/bitemyapp/learnhaskell because it uses the global package database.
Setting up Haskell is actually pretty well understood nowadays thanks to tons of people going through the flow and posting the latest "how to" here: https://github.com/bitemyapp/learnhaskell . For Ubuntu for example, it's not much harder than installing a few packages from a PPA and adding a line to your $PATH
Cabal does OK for the most part nowadays, but it's definitely still a challenge with the monster projects like Yesod. Supposedly that's a work in progress for now.
In Why No One Uses Functional Languages (1998) [pdf]This is a great place to start then! https://github.com/bitemyapp/learnhaskell
In Mutable Algorithms in Immutable Languages, Part 2MIRI (one of the more well known groups of people serious about the singularity) actually recommend people learn Haskell if they want to contribute to mathematical, statistical, AI research.
http://intelligence.org/courses/
https://github.com/bitemyapp/learnhaskell
In Learn Lisp the Hard WayIMO Haskell is your best option if you want to learn functional programming (being a purely functional language) and this is the best guide to learning Haskell I've come across: https://github.com/bitemyapp/learnhaskell
It also has an irc channel that is fairly active (#haskell-beginners).
In Ask HN: Best way to start with functional programming?If you want an introduction to functional programming, why not go all the way with a pure functional language such as Haskell:
https://github.com/bitemyapp/learnhaskell
In Ask HN: Best way to start with functional programming?Showing the 15 most recent of 23 sources. Enable JavaScript to search and browse every indexed mention.